A data set has 180 values. You have already used the "2 to the k" rule to determine that a frequency distribution for these values should have 14 classes. The minimum and maximum values in the data set are 33,250,178 and 700,176,981. Which class interval is the most appropriate? a. 70,000,000 b. 50,000,000 c. 30,000,000 d. 47,637,628

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