You have begun a quality improvement campaign in your paper mill, and, as a result, lots of pieces of paper come to your desk. Each one describes a recent problem with customers according to the following codes: A = paper unavailable, B = paper too thick, C = paper too thin, D = paper width too uneven, E = paper color not correct, F = paper edges too rough. Here are the results:

a. Summarize this data set by finding the percentage that each problem represents out of all problems.
b. Summarize this data set by finding the mode.
c. Write a brief (one-paragraph) memo to management recommending the most effective action to improve the situation.
d. Could the median or average be computed here? Why or why not?

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A, A, E, A, A, A, B, A, A, A, B, A, B, F, F, A, A, A, A, A, B, A, A, A, A, C, D, F, A, A, E, A, C, A, A, A, F, F