Question

without performing any calculations, determine which measure of central tendency best represents the graphed data. explain your reasoning. choose the correct answer below. a. the mean is the best measure because there are outliers and the data is skewed. b. the mean is the best measure because the data are approximately symmetric. c. the mode is the best measure because the data are at the nominal level of measurement. d. the median is the best measure because the data are skewed.

Explanation:

The distribution of heart - rates in the histogram appears approximately symmetric. For symmetric data, the mean is a good measure of central tendency as it takes into account all values in the data set. The median is better for skewed data, and the mode is used for nominal data.

Answer:

B. The mean is the best measure because the data are approximately symmetric.