An ecologist studying starfish populations collected starfish of the species Pisaster was interested in the distribution of sizes of starfish on a certain shoreline. One measure of size is "arm length." Below is a cumulative frequency distribution for the arm length of 102 Pisaster individuals.
The median and interquartile range of this distribution are approximately:
Select one:
a. Median is 60 : Interquartile Range is 52 to 78
b. Median is 70 : Interquartile Range is 52 to 78
c. Median is 60 : Interquartile Range is 26.
d. Median is 70 : Interquartile Range is 26
e. Median is 0.5 : Interquartile Range 0.25 to 0.75