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Better Cheddar

Using Statistical Tools to Monitor Cheese Quality Attributes



Author:

Helen S. Joyner
School of Food Science
University of Idaho
hjoyner@uidaho.edu

Abstract:

In this case study students assume the role of quality assurance personnel at a small artisan cheese company. They are given a flowchart of the cheesemaking process and a set of process data. They must develop control charts to monitor process quality from this data as well as determine if the process is producing product outside of the specification limits. They are asked to make recommendations for general process changes based on their analysis of the process. The case was developed for an upper-level undergraduate statistical food quality management course and is appropriate for any undergraduate or graduate course that covers principles of statistical quality management and quality management tools, such as operations management courses and statistics courses that cover quality management. It is also appropriate for use in quality management seminars and short courses.

Objectives:
  • Create control charts for attributes when given process data.
  • Evaluate control charts for out of control points and behaviors.
  • Select an appropriate control chart to use for monitoring quality attributes of a product.
  • Evaluate whether a process is capable of producing all product within specification limits using statistical tools and process data.
  • Determine whether a process is producing all product within specification limits using statistical tools and process data.
Keywords: Statistics; quality management; control chart; food safety; food quality; food science; process capability; capability index; cheddar; cheese making
Topical Area: N/A
Educational Level: Undergraduate upper division, Graduate, Continuing education
Formats: PDF, Excel
Type/Method: Analysis (Issues), Discussion
Language: English
Subject Headings: Statistics   Food Science / Technology  
Date Posted: 1/12/2016
Date Modified: N/A
Copyright: Copyright held by the National Center for Case Study Teaching in Science, University at Buffalo, State University of New York. Please see our usage guidelines, which outline our policy concerning permissible reproduction of this work.

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