The Department of Education is interested in gaining information concerning the financial aid of students at private and public universities. One of the goals is to determine the proportion of students who receive financial aid.The Department has taken a random sample of 2,000 students from private colleges and universities, and reports that about 60% of those sampled students receive Federal financial aid.

1. Which of the following graphical methods cannot be used to gain information regarding the shape of the distribution of the amount of financial aid received by students at private colleges and universities?

Box plot

Histogram

Stem-and-leaf plot

Pie chart

Which of the following graphical methods is the best for comparing the distributions of the amount of financial aid received by students between private colleges and universities?

Box plot

Histogram

Stem-and-leaf plot

All the above.