Download presentation

Presentation is loading. Please wait.

Published byLuisa Engelbert Modified over 2 years ago

1
Candy Capability Operations Management Dr. Ron Lembke

2
Tolerance Limits for food? Underfilling who would notice? Overfilling – would anyone care?

3
Packaged Goods What are the Tolerance Levels? What we have to do to measure capability? What are the sources of variability?

4
Production Process Make Candy PackagePut in big bags Make Candy Mix Mix % Candy irregularity Wrong wt.

5
Processes Involved Candy Manufacturing: Are M&Ms uniform size & weight? Should be easier with plain than peanut Percentage of broken items (probably from printing) Mixing: Is proper color mix in each bag? Individual packages: Are same # put in each package? Is same weight put in each package? Large bags: Are same number of packages put in each bag? Is same weight put in each bag?

6
Weighing Package and all candies Before placing candy on scale, press “ON/TARE” button Wait for 0.00 to appear If it doesn’t say “g”, press Cal/Mode button a few times Write weight down on form

7
Candy colors 1. Write Name on form 2. Write weight on form 3. Write Package # on form 4. Count # of each color and write on form 5. Count total # of candies and write on form 6. (Advanced only): Eat candies 7. Turn in forms and complete wrappers

8
Your Job Write down package # Weigh package and candies, all together, in grams and ounces Write down weights on form Optional: Open package, count total # candies Count # of each color Write down Eat candies Turn in form and empty complete wrappers for weighing

9
Grams or Ounces?

10
Peanut Candy Weights Avg. 2.18, stdv 0.242, c.v. = 0.111

11
Plain Candy Weights Avg 0.858, StDev 0.035, C.V. 0.0413

12
Mini Candy Weights Avg 0.288, StDev 0.020, C.V. 0.070

13
Peanut Color Mix website Brown 17.7%20% Yellow 8.2%20% Red 9.5%20% Blue15.4%20% Orange26.4%10% Green22.7%10%

14
Classwebsite Brown12.1%30% Yellow14.7%20% Red11.4%20% Blue19.5%10% Orange21.2%10% Green21.2%10% Plain Color Mix

15
So who cares? Dept. of Commerce National Institutes of Standards & Technology NIST Handbook 133 Fair Packaging and Labeling Act

16
NIST Fines Don’t get caught It’s embarassing You’ll look dumb

17
How Many Servings? 267.9g /45g = 5.95 servings 264.8g /36g = 7.35 servings

18
Not for Retail Sale Why Not? Ingredients Nutritional information Peanut/allergy information Need room for cute pics Process variability?

19
Acceptable?

20
Sampling Plans for Category A

21
Package Weight “Not Labeled for Individual Retail Sale” If individual is 18g MAV is 10% = 1.8g Nothing can be below 18g – 1.8g = 16.2g

22
Too Much Variability 10.9% of sample below 16.2g! Avg= 17.57, stdev 1.42

23
Suppose they wanted to Stated weight = 18g, MAV = 16.2g Suppose want 99.7% chance nothing below MAV Set the average to be 3σ above MAV σ = 1.42g, so set Avg = 16.2 + 3*1.42 = 20.46 You pay for 18g, they give you 20.46g! 13.7% Free! They have to give away 1/7 th of the candy! Clearly, they aren’t going to do this!

24
Summary Many reasons M&M’s “Not for Individual Sale” Process variability seems to be an important one, if not the major one Process variability is a very important consideration for companies. BTW, one bag was 223.6g < 264.8

Similar presentations

© 2017 SlidePlayer.com Inc.

All rights reserved.

Ads by Google