Question

a survey was given to 135 students at a local high school, asking how many hours of television they watched per week. the results are summarized in the table below. construct and label a frequency histogram of the data with an appropriate scale.

hours of tv	num. of students
3 - 5	39
6 - 8	45
9 - 11	18
12 - 14	6
15 - 17	3

Explanation:

Step1: Prepare the axes

On the x - axis, label the intervals of hours of TV watched (0 - 2, 3 - 5, 6 - 8, 9 - 11, 12 - 14, 15 - 17). On the y - axis, label the frequency (number of students). Choose an appropriate scale for the y - axis. Since the highest frequency is 45, a scale like 0, 5, 10, 15, 20, 25, 30, 35, 40, 45, 50 would work well.

Step2: Draw the bars

For the interval 0 - 2, draw a bar with a height of 24. For the interval 3 - 5, draw a bar with a height of 39. For the interval 6 - 8, draw a bar with a height of 45. For the interval 9 - 11, draw a bar with a height of 18. For the interval 12 - 14, draw a bar with a height of 6. For the interval 15 - 17, draw a bar with a height of 3. Make sure the bars are adjacent to each other.

Answer:

A frequency histogram with x - axis labeled as intervals of hours of TV watched and y - axis labeled as number of students, with bars of appropriate heights for each interval as described above.