Stream Ecologists Are Interested in the Number of Distinct Organisms

Multiple Choice

Stream ecologists are interested in the number of distinct organisms found in streams, and whether differences exist based on geography. Separate random samples are obtained from sites in northeastern and southeastern streams, and the number of distinct organisms is recorded for each site. The data are given as separate boxplots for northeastern and southeastern streams.
Which of the following statements about these data is correct?

A) The southeastern plot is skewed to the right.
B) The northeastern plot is nearly symmetric.
C) The median number of organisms found in northeastern streams is larger than the median for southeastern streams.
D) All of these answers are correct.