Two histograms showing the number of pets owned by boys and girls in a science class are each skewed left. which measure of variability should be used to describe the data? (a) mean (b) median (c) standard deviation (d) interquartile range

The right answer is a) mean, because median, ctandard deviation and interquartile range are used in math statistics and characterize а data sample. Mean is used synonymously to refer to one measure of the central tendency either of a probability distribution or of the random variable characterized by that distribution.