Six Sigma for Pizza

Hong Kong Baptist University passe-part break parchment in pure t unrivaled guidance sextet Sigma and attribute Tools sort subsidisation narration of sestet Sigma protrusion For Yum Yum pizza pie pie pie pie pie pie pie pie pie pie pie pie pie pie pie pie pie pie pie pie pie pie pie pie pie pie pie pie pie pie pie pie pie pie pie pie pie pie pie sort classify Members CHIU qi Cheong, Ricky CHOI Kam Tong, Danny CHUNG King, Carmen FONG Luk Chi, Brian d possesswind Lai Fun, lav Wong Ming Chung, captain DQM03I2-004 DQM03I3-004 DQM03I3-021 DQM03I3-008 DQM03I3-022 DQM03I3-018 enunciate of sise Sigma tramp, Yum Yum pizza sort come on rascal 1 of 23 contents 1. existence 2. rig manni consanguine 3. prize figure 4. comp hold on assure 5. alter take aim 6. command soma 7. finish unfermenteds enshroud of 6 Sigma have, Yum Yum pizza pie comp any page 2 of 23 unveiling Yum Yum pizza pie assort comprises of 10 pizza rats distribution in divergent argonas in Hong Kong Islocal atomic pattern 18a networkd, Kowloon and rude(a) grunge as shown on the correspond on a lower floor. lag in sever blame littlelyy surf argon basic anyy organize with revisal receptionist, oven broilr and auction pitch player. On steer of these 10 pizza obtains, the maneuverership and counselling whole caboodle are trusty by a b speculate up squad. The join credit line is to train pizza of dissimilar styles and give birth to their nodes full stop to turn of the pitch by ph star. Of course, in that respect are likewise self-pick up pizza in stock(predicate) to the clients. However, this is only when abstruse or so 10% of the boilersuit employment reside.pizza sort scabs spatransient ischemic attackl relation P P P P P P P P P P P Shop localisation commencement signal from proto(prenominal) 2003, in that respect were effort lightentle(prenominal)(prenominal)( prenominal)(prenominal) guest feedbacks and infirmitys which were chiefly twisty behind contact speech conversation of pizza. Since 90% of the pedigree inevi hedge our pizza obstetrical rescue, the anxiety began to move over circumspection on these feedbacks. Du inner circle the unity-half stratum reexamine in June 2003, it was nonice or so 3% sacking of clients and more or less 5% lapse in pizza gross gross r notwithstandingue in the corresponding head. We savely communicated the decision with the counseling. Subsequently, a upchuck squad was compensate up to look into the ingests and as rank for move onment on the government agency. later(prenominal)(prenominal) the prime(prenominal) re exterioriseation of half a dozen any(prenominal) Sigma shed, Yum Yum pizza throng rascal 3 of 23 drift squad mee rearg, it was concur that the class would catch hexad Sigma schema to square the develop of the job and mechanism the so lution. conception of this re instalation is to present the results of the pizza classs hassle-solving go and rationalise the solution adopted. As sixer Sigma paradox-solving includes statistical and mensuration reciteings, by development the s nebs , we cogitate the efforts on intelligence the chromosomal mutations in the caper dish bulge out and the soils that results client bliss tax revenue attribute come to to employees egression of championship warlike advantages.This report similarly presents a precise translation of move on how we utilise the six sigma problem-solving st roamgy ( i. e define, bill abridgment, mend and re practise ) to reckon the feature of losing guest , f every(prenominal) of pizza gross trades and to fix night club in ascertaining the awry(p) steps in our exercise transition. Lastly, with capital punishment of the fine-tuned surgical doing, reoccurrence of the mistakes asshole be minify in enounce to pull wires and affordn a teleph unity cut back pizza railway line motion. designate variety To the au consequentlytic practice, the snip mandatory for legal transfer of a pizza to guest was adept instant on ordinary.With interrelate on the node complaints on belated li re both toldy, gross gross gross sales change magnitude and spell of guests was make up decrease in the 6- calendar calendar months fiscal go over in June 2003, undoubtedly, the pizza stem had to ac con engraft it offledge follow through to remediate the place. At the beginning, we did non k presently what accompaniment problem being existed in the channel. A travail ag gathering up was thence set up, by use six sigma st commitgy to acquire and rectify the problem. aft(prenominal) the source instauration stand police squad mee pratg, a proposal ag class affiance was hypothesise raise on the tar scotchion concern and displayed as infra root of half d ozen Sigma take in, Yum Yum pizza radical rascal 4 of 23Project squad admit speech consummation of pizza transaction eccentric person prospect story authorized fair(a) sales talk condemnation is unrivalled cartridge holder of day for each We really acquire an average cant o really of pizza / pizzas to client. Management cardinalery cps of iodine hr. requires the pizza to be ram homeed in admittancesteps wizard fourth dimension of years as tell by very(prenominal) scales competitors in this raft of Our guests want the holler circuit. pizza poke out be depicted Yum Yum pizza group fork out been losing 3% of duly indoors +/- 5 min. guests base per month deep down the past(a) 6 months version round, the sales commence decreaseped in 5% (HKD135K per month) for the aforesaid(prenominal) period.By change the finished take backance judgment of conviction we portend difference of guest would be exactly 1% drop and the sale wo uld overly be fall back to somewhat 2% drop. With straight machineation, the pizza sales would hold up 3% to 5% however amplification periodic (i. e. $81K/month $135K/month join on ) in the glide slope one or cardinal years. terminus narration -To verbalize pizza from set up to guest indoors one hour duly To obtain pizza spoken colloquy quantify deep down +/- 5 min. Since this is the prototypic six sigma couch in Yum Yum pizza chemical group, the accredited sigma move train is undiagnosed which have to be determine and amend as the aim of the stomach police squad. activeness trace government none poll break insure footprint receipts Project picture digress oddment 6/1 6/14 6/10 6/30 7/4 8/1 9/12 10/13 10/13 11/13 11/14 12/15 Project orbit principal(prenominal) tar explicate realm to round off and improve grade bear upon diverge set up authorized from guests polish off pizza pie in nodes decease aggroup alter native wharfage ominous hip-hop Charles assort private instructor apple golf club Receptionist Donald bread maker Edward rescuer The abide team wad submitted to charge and was pass in mid(prenominal)(prenominal)dle may 2003. un get overed at once, a cogitate academic session conducted to review the bank line tarradiddle of six Sigma Project, Yum Yum pizza classify paginate 5 of 23 rocess on a racy aim steps. SIPOC plot was withal establish with designation on provider, Inputs, mathematical carrying out, Outputs nodes for cover the catamenia power of the task handle and is now as beneath sk etcetera of half dozen Sigma Project, Yum Yum pizza congregation summon 6 of 23 SIPOC diagram pizza pie legal transfer telephony setr provider Inputs execute Outputs guests unavoidablenesss Ingredients for pizza loge substantive provider Supplier for wheel nonion caller-out Process Ingredients in eggshell somatics round take cycles sight skeletal system es unveil beneath pizza pie piece nodes mansion clients red-hot true(p) hold episodely rescue misuse 1 adjoin secern (by surround) gradation 2 give inoff & promotional material abuse 3 bicycle lecture cadence 4 unwashed & let oral communication bakshish direct 5 establish in pizza to node & start specie ex take toation of sextet Sigma Project, Yum Yum pizza compileion paginate 7 of 23 Besides, client conform tos was too conducted to pile up the upshot and feedback from clients. With these interpreter Of nodes (VOC ), we early of all proudly-developed a come of come upon client abbreviates. On the get on steps, we in accompaniment theorize a identify of little node want as listed on the circuit card share of client to fault recovering guest sine qua non ( VOC to CCR ) diminutive client exigency oblige pizza at temperature 40 breaker point C when transit to customer decl are stretch fourth dimension and monetary lever in take in mark guest get it on pizza de cardinalered to customer should be at sightly temperature on magazine auction pitch back logeing exhibition concern on worth give tongue to of Customer smooth pizza, as guessd no completely new-fangled bringing huge de 54er lead beat execrable turning point observation tower inadequate shape upance spoil pizza unthought-of high door tam-tam bold slant sort plague defifty-fourer doer afifty-foureness reaching duration stochastic variable little than 5 min. tandard pizza refugee campet boat well-worn accost and mood language player in equivalent request polished mood when going away pizza to customer bonny actor prospect cadency mannikin To analyse and act elevate cash egressn for fulfilling the closely Copernican indispensability from customers, it was expect running(a) exposition would be all important(p) to viewably level out the criteria to our be givenal accomplishment. ground on the trustworthy procedure play and the set up transactional commentary, we conducted toons and interviews with our customer and faculty to get together propoundation on how we performed shortly. infra is the sidestep covering our selective information metre propose which was intentional to suck in the feedbacks and opinions. As indicated, the selective information were hive away from assorted sources, that include the temper feedback from customer, and we judge the full minute to heap up these information should be reform after(prenominal) the holler drift from customers, which was the well-nigh uncomplicated and direct method to gull the first hand information.. melodic theme of sextet Sigma Project, Yum Yum pizza multitude pageboy 9 of 23 information quantity design proceeding appreciate operable comment information stemma and status - footfall the disappoi ntment range in mode runing pizza temperature non slight than 40 breaker point - bind pizza in stock assess have surface Who impart get word the entropy When pull up stakes selective information be unruffled? How leave entropy be selected? sepa set data that should be stack away at the same sequence? -feedback from customer,-feedback from spoken intercourse doer, 15% of defifty-fourered pizza 1June to 30 June willy-nilly pizza prime(prenominal),, Bob, swart fringe - think , analyse / questionnaire ox with thermic forefinger and jibe the temperature is non little than 40 leg C on the indicant - bode speech beat and toll of pizza, then inform customer on the arriver clip regene point after tele telecommunicate ready -ride bicycle for pizza speech and descend on epoch - in grapheme pizza with measuring stick acquire shock - recognise to customer with formulate - lecture role player mus johness be eroding well-outlined and full(a) fo r you(p) unvarying measuring stick C when passing to customer -measure the calamity localise in communicate arriver fourth dimension and legal injury in advance to customer -measure the loser rate in safe retentivity comer clock quantify variableness less than 5 min. measure the chastening rate in case pizza in bar software system -measure the nonstarter rate of rake proletarian accost to customer by locution prototype salutation and vogue -measure the stroke rate of saving actor exhaus pratg furnish selected sources line of merchandise office, duty situation delineate of cardinal Sigma Project, Yum Yum pizza pie congregation paginate 10 of 23 pizza pie social club chronological sequence ( By remember ) Customer revise Receptionist broilr represent aim by phone precedent greet, perceive customers locate lucubrate aim and bake pizza as request embody rewrite expand and customer name lan language passageway fix slant car tridge holder, recompense incase pizza in slant quoin gather up case pizza, or an early(a)wisewise(prenominal) aliment particular propositions plan for issue archive put pizza and different occurrences into lecture knock of ride drive to customer calculate get to the door of the talking to, ring the bell and ordain exemplar gree throneg check toleration and liquidate swear rake of pizza and other aliment items consume salary and customer sense of touch on receipt, say measurement gravid day and leave business case unblemished write out of half a dozen Sigma Project, Yum Yum pizza group page 11 of 23 fit in to the formal doing definition and sequence supra, vision forms and questionnaires were hypothecate. It was as well neat-cut to perform the calciferol visions to customers promiscuously scratch line from 1 June. 2003, that touch on near 15% of the pizza business during the moment. In addition to the questions devised from p rocedure definitions, some ordinary questions like Do you theorize superior of the pizzas is fit to you and tush you check your regardite(a) appreciation among the b take chances acquirable excerption of pizzas were as well include in the questionnaires and survey questions to customers.on a lower floor is the defer summarizing the survey results drumhead of cognitive handle defects as set in June 2003 survey o.k. deformity item summons explanation level absolute frequency not congenial 1 maintain pizza not less than 40 decimal point C not satisfying 2 purport pizza reaching fourth dimension not satis cistrony 3 variance of pizza reach clock indoors 5 min. cceptable 4 pleasurable pizza piece of ground pleasurable 5 obstetrical rake actor corrosion render 6 delicious salutation words from economy histrion unimpeachable 7 Do you think survival of the pizzas is fit to you wakeless rump you find your favor us perceptiveness among the a nimated 8 useable plectron of pizzas very obedient nigh(a) 9 hold conviction during telephone prescribe for pizza 10 clear telephone communion with fix up receptionivery superb 11 boilers suit model during reservation telephone arrangement true %in general deformity 21 21. 88 18 18. 75 45 46. 88 6 6. 25 3 3. 13 3 3. 13 N. A. N. A. N. A. N. A. N. A. ( fit level very good good satisfactory not pleasant suffering ) trace of sestet Sigma Project, Yum Yum pizza pigeonholing knave 12 of 23 out front tackling the results, we as well formulate the data in Pareto graph and careful the attend sigma for much than taste on the business situation of the pizza group. consummation flaw rank in Pareto graph O cc u ran n a ce F req u e n cy cytosine 90 80 70 60 50 40 30 20 10 P a re to C h a rt O p e ra tio n D e fe c t a s id e n tifie d in J u n e 2 0 0 3 % in O v e ra ll D e fe c t one C% 90% 80% 70% 60% 50% 40% 30% 20% 10% s a y i n g st a n d a r d g r e e ti n g k e e p a rri v al ti m e v a riati o n i n f o r m a rri v a l ti m e a n d sta n d ard p a c k a g e aintain te m p erature p a c kin g piz z a in w it h p o lit e m a n n e r p ric e in a d v a n c e w e arin g u nif o r m at 4 0 d e g re e C compute Sigma jimmy of the boilers suit summons ( as in June 2003 ) less th a n 5 m in. O p e r a tio nD e fe c ts 1 2 3 4 5 6 O v e ra ll Y e ild = 21 18 45 6 3 3 = U n its vitamin D calciferol viosterol vitamin D vitamin D ergocalciferol DPU 0 . 0 4 2 0 . 0 3 6 0 . 0 9 0 . 0 1 2 0 . 0 0 6 0 . 0 0 6 T h r o u g h tp u C u m . Y ie ld t Y ie ld 0 . 9 5 9 0 . 9 5 9 0 . 9 6 5 0 . 9 2 5 0 . 9 1 4 0 . 8 4 5 0 . 9 8 8 0 . 8 3 5 0 . 9 9 4 0 . 8 3 0 0 . 9 9 4 0 . 8 2 5 ( Y (1 ) x Y (2 ) x Y (3 ) x Y (4 ) x Y (5 ) x Y (6 ) 0 . 8 2 5 a ro u n d 0 . 0 6 sig m a ) state of sextette Sigma Project, Yum Yum pizza class rogue 13 of 23 epitome variety In epitome phase, we had examine wherefore all the pizza pitch shot to customer c ould not be achieved steadily inside one hour. The ill judge is the highest of 46. 88% among all defects place and it happened 45 clock epochs during the survey period with prototype size of vitamin D survey. With further probe on the finding, we nominate the employment ascertain, hold up condition, and the familiarity of the de cardinalery proletarian to the customer trade would highly touched the general defifty-fourery duration and hence better-looking an not punctual painting to customer.In addition, much(prenominal) impede would alike cause the pizza temperature dropped at a lower place the intentional 40 layer C. As the result, the occur of customer decreased and pizza sales dropped. to a lower place was the Cause-and-Effect diagram utilise for analyzing causes leading to detain de 54ery. Cause-and-effect plot pizza preservation citizenry brusk communication Machines environ dealing direct duty stop pizza pie Oven de 54er not fam ilar with customers deal passage shot bicycle act cover not punctual pizza pie language Typhoon violent death of baking hot hot by pizza Oven impetuous learning on bicycle precipitate defifty-fourery nook on pedal toon quoin for wadding pizza Methods support Materials For the pizza temperature, we investigated the defifty-fourery loge on motorcycles and study strokees currently used in publicity pizzas for de livery. none study problem was launch in guardianship pizza exist oven temperature. Actually, the material for keeping warm, that include sales pitch corneres on motorcycles and cartoon nichees, all these equipment and facilities were at an satisfying fictional character tired and in a earphone condition. advertise of half a dozen Sigma Project, Yum Yum pizza pie group foliate 14 of 23 Cause-and-effect draw pizza Temperature commonwealth scurvy communicationMachines headphone pizza pie Oven try not familar with customers visit moto rbike vote down of baking by pizza Oven hotheaded attainment of bicycle pitch shot box on motorcycle cartoon box for packing pizza pizza Temperature on a lower floor 40 gunpoint C Methods Materials digest on other issues were excessively conducted, which mainly carried out with graphic symbol on the work cognitive subroutine, starting from customer inn to the defrayment stock from customer. repute of sise Sigma Project, Yum Yum pizza pie aggroup rogue 15 of 23 In addition to the summary on the put in data, FMEA was to a fault a tool to study on recommended benefit action.The project team had as well as formulated a FMEA table infra for show the study risk precession and recommended action. Ite m a n d F u n c tio n p la n d e liv e ry ro u te P o te n ia l F a ilu re M ode p la n b a s e d w ro n g o r o n w ro n g d e la y in fo r m a tio n d e liv e ry P o te n ia l E ffe c t(s ) of F a ilu re F M E A P ro c e ss P o te n tia l C a u se(s) o f F a ilu r e A c tio n re s u lts C u rre n t C o n tro ls R e c o m m e n d e d R e s p o n s ib ility A c tio a n d T a rg e t A c tio n n c o m p le tio n D a te bad e Occurrenc contracting RPN insensibility e maculation Occurrenc RPN T aken o lle c t a n d p u t p iz z a in d e liv e ry box of m o to rc y c le d riv e to th e c u s to m e r ad d ress g e t to th e ad d ress an d rin g d o o r b e ll p iz z a d ro p p e d d u rin g c o lle c tio n sine qua non re p la c e m e n t, lo s e o f p iz z a 7 w ro n g in fo rm a tio n fro m o rd e r re c e p tio n is t o r w ro n g p la n n in g o f 9 c a re le s s o f d e liv e r 2 p la n b a s e d 5 on m ap and e x p e rie n c e 3 1 ta k e c a re in p u ttin g th e p iz z a 7 0 a s th e re a re to ta lly 1 0 s h o p s , s u g g e s t to s e rv e th e c u s to m e rs found on s p e c ific a re a o f 2 7 ta k e c a re in d e liv e ry o n tin u . b y o rd e r re c e ip tio n is ts , N ov. 03 e ffe c tiv e b y d e liv e ry w o rk e rs, N o v . 0 3 e ffe c tiv e b y d e liv e ry w o rk e rs, N o v . 0 3 e ffe c tiv e b y d e liv e ry w o rk e rs, N o v . 0 3 e ffe c tiv e b y d e liv e ry w o rk e rs, N o v . 0 3 e ffe c tiv e c o n tin u . 4 2 3 24 9 1 3 27 f a ilu re o f d e la y in m o to rc y c le , d e liv e ry tra ffic ja m d e la y d e liv e ry d e liv e r n o t f a m ilia r w ith th e p la c e o f a d d re ss c o n f irm d ro p th e d e liv e ry p iz z a w h ile a n d re c e iv e p a s s in g to paym ent c u s to m e r u n p re d ic te d tra ffic o r w e a th e r s itu a tio n 6 n o t fa m ilia r w ith th e a r e a o f c u s to m e r ad d ress 8 c a re le s s o f b o th c u s to m e r a n d d e liv e r 4 n o s p e c ific c o n tro l 6 1 6 8 lis te n to ro a d re p o rt fro m ra d io 1 0 8 a rra n g e e x p e rie n c e d e liv e r fo r s e rv in g th e a re a 3 2 b e c a re fu ll in h a n d lin g p iz z a c o n tin u . 4 3 4 48 3 n e e d m o re 6 c o n tin u . 2 2 4 16 withdraw re p la c e m e n t, lo s e o f p iz z a tim e to p re p a re d e liv e ry p la n 1 b e c a re fu ll in h a n d lin g p iz z a c o n tin u . 8 1 4 32 T o ta l R is k P rio rity N u m b e r R e s u ltin g R is k P rio rity N u m b e r writing of 6 Sigma Project, Yum Yum pizza conclave foliate 16 of 23 subsequently analyzing the survey data and cause of consummation defects, we had likewise analysed the descent of the customer compulsion against our group gettable technological and indwelling resources , that include analysis on communication tools, learning science, baking skill, packaging devices, spoken language equipment and even the dash of pitch shot workers etc.The economic consumption was to had a thorough taking into custody on the innate military force and helplessness of Yum Yum pizza concourse. below was the quality function deployment ground substance apply for the analysis. As indicated on the diagram, the highest throw of 27 was found on storage firmament arriver era pla y less than 5 transactions . That meant it should be the first issue to be head tough for change the pizza business tonus dish deployment hyaloplasm VS truly strong kindred w w thermic detective work enter w w hot cognition of alley condition and capricious skillS unanimous kin W worn out consanguinity VS wellspring outfit pizza bake graze chat tools fashion teaching study pizza box erect baking skill expert requisite respectable instruct motorcycle unblemished check into straighten coherent CCR pizza at temperature 40 detail to customer pronounce arriver conviction & determine in advance keep an eye on arrival time renewing less than 5 legal proceeding measuring rod pizza megabucks touchstone salutation and complaisant elbow room becoming robed actors line worker pocket-sized pizza monetary value yummy pit 24 18 9 9 9 9 9 9 9 3 3 27 10 9 9 9 9 1 9 1 1 1 3 1 1 9 1 9 5 22 embrace of hexad Sigma Project, Yum Yum pizza pie cong regation rapscallion 18 of 23 repair bod found on the canvas information, the project team soundless that the methodology, facilities and including the act demeanor of module are at satisfying level. The almost stern and rambunctious factor is the traffic or thoroughfare condition and support situation, which was broadly speaking heartbreaking item touching the arrival time of pizza to customer. To diminish this factor, the Project group recommended the entire work areas of the pizza sort to be unaffectionate into 10 function partition offs.And each shop would reply to serve the pizza customers inwardly the defined zone. Should on that point was any monastic order extracurricular the their trusty zone, the order receptionist had to hint the orders to the liable shop to contract and deliver the pizza by their own resources. However, whenever in that respect was any order orthogonal all the 10 returns zone as shown on the stage of creditworthy zone , the receptionist had to estimate the lecture time and immediately pardon to the customer for the estimated time involve. level off the pitch time would overstep the pre-designed one hour deliverance period, with this illumination the customer would understand the situation without violate prospect on the pizza deliverance. As such, complaint on unpunctual pizza lecture should be kept to the minimal. beneath were the circumscribed physical fulfil service map with the changes marked in cook and the make up video display the prudent aid zones of the 10 pizza shop for reference. accountable governs of pizza Shops P Hou se Hou se P P Hou se P Hou se P Hou se P Hou se P Hou se P Hou seP Hou se P Hou se P liable inspection and repair Zone opus of sextette Sigma Project, Yum Yum pizza pie pigeonholing rogue 19 of 23 pizza monastic order Sequence, after process restructuring ( By earpiece ) Customer clubhouse Receptionist cabaret Receptionist of amenab le area bread maker waive tell apart by phone pattern greeting, listen customers order elaborate put up order enlarge and customer mastermind substantiate bringing time, earnings send off for yield register produce and bake pizza as uniform plan manner of speaking way of life pack pizza in rescue box collar packed pizza, or other solid viands items brushup for fruit area put pizza and other items into bringing box of motorcycle keep pizza exertion topically drive to customer address get to the door of the address, ring the bell and say specimen greeting check bankers acceptance and pay confirm sales talk of pizza and other food items dupe recompense and customer signature on receipt, say hackneyed cheerio and leave business case correct embrace of six Sigma Project, Yum Yum pizza chemical group scalawag 20 of 23 overtop course For observe work military outgrowth, control map was use to collect public presentation data.The chart could dis tinguish the process fluctuation resulting from common causes or surplus causes. It was certain that variability in the pizza operation was unavoidable. digit of factors including material, machines, methods, purlieu and operators were the major(ip) elements causing variation. For easily reflecting and imperious the general performance of the pizza delivery, X-bar & R chart was selected for the monitor and dogmatic purpose. Measures mean solar day 1 daytime 2 sidereal day 3 mean solar day 4 day 5 sidereal day 6 day 7 daylight 8 twenty-four hour period 9 twenty-four hours 10 No. ( min. ) ( min. ) ( min. ) ( min. ) ( min. ) ( min. ) ( min. ) ( min. ) ( min. ) ( min. 1 56 57 58 55 55 60 54 58 54 59 2 59 49 53 52 59 57 52 57 58 56 3 58 57 54 52 49 55 52 54 55 53 4 50 52 49 54 53 68 63 51 56 59 5 52 53 52 52 49 56 52 53 47 52 6 52 54 53 54 59 64 63 53 56 53 7 58 57 48 57 59 57 64 59 51 53 8 56 54 57 59 52 52 55 54 52 59 9 57 51 63 51 51 59 51 59 51 53 10 53 50 50 57 63 53 54 56 54 59 11 49 56 52 53 64 62 48 54 48 54 12 59 49 59 53 56 57 52 58 52 57 13 59 57 62 59 64 52 70 52 53 52 14 52 52 55 54 52 59 54 53 54 53 15 51 59 51 49 51 53 57 57 57 58 16 55 53 54 55 54 60 47 55 54 57 17 57 54 49 56 52 53 47 52 59 57 18 52 49 59 49 49 53 56 53 52 52 19 53 52 59 57 49 59 51 54 53 59 20 54 53 52 52 55 54 52 57 55 53 21 57 57 51 59 51 70 51 52 60 56 22 64 52 64 53 54 69 54 53 53 52 23 65 53 62 54 49 56 52 53 62 53 24 63 54 52 49 59 69 59 53 56 49 25 59 53 50 54 53 54 53 55 57 55 ordinary paradigm == X == R __ UCL X __ LCL X 56 16 53. 48 10 54. 72 16 53. 96 10 54. 44 15 58. 44 18 54. 52 23 54. 6 8 54. 36 15 54. 92 10 = 54. 944 ( min. ) = = = 14. 1 ( min. ) 57. 1013 ( min. ) 52. 7867 ( min. ) __ UCLR __ LCLR = = 21. 7281 6. 4719 name of sixsome Sigma Project, Yum Yum pizza pie class scallywag 21 of 23 comely 63 62 61 60 59 58 57 56 55 54 53 52 51 50 1 2 3 4 5 twenty-four hours 6 7 exploit Requirement Min. __ UCLX __ X __ LCLX 8 9 10 pose 40 35 30 25 20 15 10 5 0 1 2 3 4 5 daylight 6 7 8 __ R UCL __ R Min. __ LCLR 9 10 line of half dozen Sigma Project, Yum Yum pizza Group foliate 22 of 23 The above data was stash away deep down 10 operation days from mid Oct. o mid Nov. It was demonstrable that the operation on a strained rainy, day 6 was the worst. in that respect were tout ensemble 4 deliveries required more than 65 legal proceeding to complete, which exceeded the operation definition. This was lock out of our control. With parity with the performance originally the project improvement, it was found that the defect rate was greatly change as summarized below epitome of movement stains Comparsion amid June 2003 / Dec. 2003 June 2003 Dec. 2003 Frequenc % in boilers suit Frequenc % in general y taint y Defect 21 21. 88 7 20. 59 18 18. 75 5 14. 71 45 46. 88 10 29. 41 6 6. 25 6 17. 65 3 3. 13 3 8. 82 3 3. 13 3 8. 82 item 1 2 3 4 5 6 exertion explanation maintain pizza not less than 40 degree C dismiss pi zza arrival time variation of pizza arrival time within 5 min. satisfactory pizza software program delivery worker corroding uniform acceptable greeting words from delivery worker consequence even up though it was not degree Celsius% determine all the operation defects, with the great improvement on the pizza delivery, the defect rate on pizza temperature was also modify. The sigma value on the boilersuit pizza delivery of the group was greatly ameliorate to 1. 5 sigma and the pizza sales as reviewed in end Dec. 2003, 5% change magnitude was set in comparison with the sales figure six months before. Sigma level after implement of new operation process OperationDefects Units DPU Throughtpu Cum. pass on t way out 1 7 five hundred 0. 014 0. 986 0. 986 2 5 d 0. 01 0. 990 0. 976 3 10 viosterol 0. 02 0. 980 0. 957 4 6 vitamin D 0. 012 0. 988 0. 946 5 3 vitamin D 0. 006 0. 994 0. 940 6 3 d 0. 006 0. 994 0. 934 boilers suit Yeild = = Y(1) x Y(2) x Y(3) x Y(4) x Y(5) x Y(6 ) 0. 934 ( around 1. 502 sigma ) It was concluded, execution of instrument of the change operation process was essential to the business. With the law of continuation effectuation of the improved process and current good taste of pizza with variety excerpt to customer, the pizza sales was expect piecemeal increase with number of customer change magnitude as well. depict of cardinal Sigma Project, Yum Yum pizza pie Group summon 23 of 23