A statistics instructor is interested in the class status of her students, which is defined as freshman, sophomore, junior, or senior. She downloads her roster, a portion of which is shown in the following table.

Student Status

1 Senior

2 Sophomore

60 Senior

pictureClick here for the Excel Data File

a-1. Construct the frequency and relative frequency distributions. (Round relative frequency to 2 decimal places.)

a-2. How many freshmen are in her class?

a-3. What percent are sophomores?

b. Select the pie chart that best describes the data.