# Worksheet: Frequency Curve

In this worksheet, we will practice reading and interpreting statistics data form a frequency curve.

Q1:

This frequency curve shows the amount of time students spend doing homework every night. How many students spend 15 minutes or more doing homework? Q2:

Use the frequency curve to find the number of students who are between 55 and 65 inches tall. Q3:

The following table shows 160 air flights landing at an airport from 12:00 pm to 10:00 pm.

 Time No. of Flights 12:00–2:00 2:00–4:00 4:00–6:00 6:00–8:00 8:00–10:00 35 40 45 25 15

Which of the following graphs represent the given data?

• A • B • C • D • E What is the number of landings after 6:00 pm?

What is the number of landings before 6:00 pm?

Q4:

The frequency table shows the expected temperature in degrees for 30 cities on one summer day. Find the number of cities whose expected temperature is 40 or more.

 Temperature in Degrees Number of Cities 24–28 28–32 32–36 36–40 40–44 44–48 3 4 7 9 5 2

Using the frequency curve, find the number of cities whose temperature is 40 or more.

Q5:

The table gives the teachers’ ages in a secondary school.

 Age Frequency 22–26 26–30 30–34 34–38 38–42 8 11 20 8 5

Which of the following frequency curves represents the given data?

• A • B • C • D • E Q6:

The frequency curve shows the time taken for a group of students to read a short article. How many students took between 50 and 60 seconds to read the article?

How many more students took between 60 and 70 seconds to read the article than those who took between 50 and 60 seconds?

How many students took more than 50 seconds to read the article?

Q7:

The following table shows the marks of 100 students in science over the course of one month.

 Marks No. of Students 20–30 30–40 40–50 50–60 15 30 40 15

Which of the following graphs represents this distribution?

• A • B • C • D • E Q8:

The following table shows the number of hours spent by 50 pupils using their computers.

 No. of Hours (ℎ) No. of Pupils 1≤ℎ<3 3≤ℎ<5 5≤ℎ<7 7≤ℎ<9 9≤ℎ<11 11≤ℎ 7 10 20 6 5 2

Represent this data in a frequency histogram.

• A • B • C • D • E Which of the following frequency curves matches this histogram?

• A • B • C • D • E Q9:

The frequency curve shows the number of movies watched by a class of students during a month. How many students watched less than 14 movies? Q10:

Mason spent Saturday counting how many cars passed by his house. Find how many cars passed by Mason’s house between 9:00 am and 11:00 am by drawing a frequency curve.

 Time Tally 9:00 am-10:00 am 10:00 am-11:00 am 11:00 am-12:00 pm 12:00 pm-1:00 pm 1:00 am-2:00 pm