For questions 1 – 2, use the following comparative stem-and-leaf plots to answer questions about the center, shape, and spread of two distributions. calculation tip: remember that the extreme values, or longer "tail," determine the skewness of a data set. a. (picture 1) b. (picture 2) c. (picture 3) 1. identify each histogram as symmetric, positively skewed, or negatively skewed. 2. choose the correct answer to complete each sentence. for histogram a, the mean is ( less than / the same as / greater than ) the median. for histogram b, the mean is ( less than / the same as / greater than ) the median. for histogram c, the mean is ( less than / the same as / greater than ) the median.