Give Measures of Center and Variability Practice Test

A student measured the heights (in centimeters) of 7 plants: 18, 19, 19, 20, 20, 21, 22. Which choice correctly reports the mean, MAD (mean absolute deviation), and a description of the overall pattern and striking deviations?

The number of text messages a student received each day for 7 days was: 10, 11, 12, 12, 13, 14, 15. Find the mean and the MAD (mean absolute deviation from the mean). Then describe the overall pattern and whether there are any striking deviations.