MAD about Mean Absolute Deviation

Warm-Up:Elena, Jada, and Lin enjoy playing basketball during recess. Lately, they have been practicing free throws. The record the number of baskets they make out of 10 attempts. Here are their data sets for 12 school days:Based on those numbers, who would you choose to be on your team? Elena Jada Lin Here is each students’ scores shown on a dot plot with the mean for each student. The mean is the same. Look at how the data is displayed. Who would you choose to be on your team now? Elena Jada Lin Did your answer change? Why or why not? Its time to practice! a. Is 30 pages a good estimate of the mean number of pages that Han reads each day? Why or why not? Explain your reasoning. b. What is the mean number of pages that Han read during the five days? Number of Pages Distance from Mean 25 7.6 28 4.6 32 .6 36 3.4 42 9.4 d. What is the MAD of the data? Is there a lot of difference (variability) in the number of pages that Han reads every night, or is the number about the same?