Chapter 1.2, Problem 68E

(a)

To determine

To find: the type of graphs used for the given issues.

Answer to Problem 68E

Bar graph is used here

Explanation of Solution

Given:

Radio stations those are most popular with students

To study which radio stations are most popular with students, Bar Graph would be used because it studies the categorical variable and popularity of radio station is categorical it cannot be measured in numbers.

(b)

To determine

To find: the type of graphs used for the given issues.

Answer to Problem 68E

Histogram can be used to find the number of hours.

Explanation of Solution

Given:

The number of hours the students would study

To study how many hours per week do students study, histogram can be used as it studies the quantitative variables in terms of frequency and relative frequency.

(c)

To determine

To find: the type of graphs used for the given issues.

Answer to Problem 68E

Dot-plot is used to fin the number of calories.

Explanation of Solution

Given:

The number of calories the students would consume per day

To study that how many calories do students consume per day, dot-plot can be used which is a quantitative variable and is measured on number-line.