A university teacher saved every e-mail received from students in a large Introductory Statistics class during an entire term. He then counted, for each student who I had sent him at least one e-mail, how many e-mails each student had sent.

a) From the histogram, would you expect the mean or the median to be larger? Explain.
b) Write a few sentences describing this distribution (shape, center, spread, unusual features).
c) Which summary statistics would you choose to summarize the center and spread in these data? Why?