50

a survey was conducted on the salaries of 20 randomly selected college graduates with degrees in the same subject area. each person surveyed graduated within the same 5-year period. ten of the people surveyed attended a private university, while the other 10 people surveyed attended a public university of roughly the same size.

private public
first quartile $58,000 $35,000
second quartile (median) $71,000 $42,000
third quartile $85,000 $54,000

based on the samples, what generalization can be made?

the top ten percent of both the private and public university graduates surveyed earned more than $60,000 annually.

the interquartile range for public universities is $19,000 more than for private universities.

the top twenty-five percent of both the private and public university graduates surveyed earned more than $50,000 annually.

the interquartile range for private universities is $27,000 more than for public universities.