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5
Chi-Square Analysis to Verify
Quality of Candy Packets
This case study is about how chi-square analysis can be used in a Six Sigma
project to collect voice of the customer (VOC) data and then to verify if a
claim made about product quality is true.
Colorful Candy, Inc. makes colored chocolate candy and sells them in
packets that are claimed to contain 14% yellow candy, 13% red candy, 20%
orange candy, 24% blue candy, 16% green candy, and 13% purple candy. The
company wants to know whether the customers really care about the variety
of colors, and if so, whether the above claim of percentages is correct.
Section 5.1 gives a brief description ...