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Problem II (10pts) It is important to group a set of raw data as a first step for statistical analysis. Suppose that we have a se of 518 human height data in meter that we want to group. In this case, how many class intervals we should have in the frequency distribution of the data by using Sturgess rule? Also, how wide the intervals should be? What is the width you finally want to choose? (*shortest height: 148 cm and talles height: 198 cm) (10 pts)
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