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= Constructing a frequency distribution for grouped data Ms. Parker gave her students a biology test last week. Here are the test scores for each of the eleven students. Complete the grouped frequency distribution for the data. In the distribution, the frequency of a class is the number of test scores in that class. (Note that we are using a class width of 6.) Test score Test score Frequency X ? 85 87 71 67 66 to 71 83 78 76 67 72 to 77 80 66 72 78 to 83 84 to 89