MAT-152 Written Assignment 1
Answer the following questions. You can either handwrite your solutions (e.g., by printing this
document and writing on paper or by using drawing software), or you can type your solutions.
You do not need to show any work for this assignment.
A certain high school has 1,427 students enrolled. The frequency of each grade level (freshman, sophomore, junior, and senior) of the students are as follows:
Grade Level
Frequency
Freshman
491
Sophomore
343
Junior
334
Senior
259
1.
Does this data represent a population or a sample?
X
Population
[ ] Sample
2.
Does this data represent a qualitative variable, a discrete quantitative variable, or a
continuous quantitative variable?
[
X ] Qualitative
[ ] Quantitative, Discrete
[ ] Quantitative, Continuous
3.
Calculate the relative frequency and percentage for each class level to fill in the table
below. Write the relative frequencies as unreduced fractions and round the percentages to
2 decimal places (AFTER converting to a percentage).
Grade Level
Frequency
Relative
Frequency
Percentage
Freshman
491
491/1427
34.41%
Sophomore
343
343/1427
24.04%
Junior
334
334/1427
23.40%
Senior
259
259/1427
18.14
4.
Would it be reasonable to use a pie chart to display this data? Why or why not?
Yes, because you can then see which class of students make up what percentages and you
can compare the class sizes.
5.
Sketch a bar chart which displays the frequency of each grade level. You can draw this
by hand or insert an image from Excel.
