Twenty students participated in a psychology experiment which measured their heart rates in two different situations. Dot plot from 70 to 105 by 5’s. Situation A. Beginning at 70, number of dots above each increment is 0, 1, 4, 5, 5, 4, 1, 0.

Dot plot from 70 to 105 by 5’s. Situation A. Beginning at 70, number of dots above each increment is 1, 2, 4, 6, 4, 2, 1, 0.

What are the appropriate measures of center and variability to use with the data? Explain your reasoning.

Which situation shows a greater typical heart rate?

Which situation shows greater variability?