Danny and Jennifer recorded how many hours they spent on homework each day for 14 days

MATHEMATICS · Multi-part · CBSE · Mathematics · Statistics · Statistics

Problem

Danny and Jennifer recorded how many hours they spent on homework each day for 14 days. *Danny:* 3123\frac{1}{2} , 3123\frac{1}{2} , 4, 2122\frac{1}{2} , 3, 3123\frac{1}{2} , 3, 1121\frac{1}{2} , 3, 4, 2122\frac{1}{2} , 4, 4, 3 *Jennifer:* 2122\frac{1}{2} , 1, 2122\frac{1}{2} , 2, 2, 2122\frac{1}{2} , 1121\frac{1}{2} , 2, 2, 2122\frac{1}{2} , 2, 2, 2, 1121\frac{1}{2} (1) Calculate the mean number of hours each person spent on homework. (2) Which person generally studies for longer? (3) Calculate the population standard deviation σ\sigma for each data set. (4) Which person studies more consistently?

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