IXL | Create percent bar graphs

Emma surveyed her friends about their favorite outdoor winter activity.

Favorite outdoor winter activity
Activity	Snowboarding	Skiing	Ice skating	Snow tubing
Frequency	4	2	1	3

Make a percent bar graph that shows the relative frequencies of the activities.

Snowboarding

Skiing

Ice skating

Snow tubing

Activity

Relative frequency (%)

Favorite outdoor winter activity

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Learn with an example

question

Ann is a housekeeper. Last weekend, she cleaned 5 apartments, 3 houses, and 2 condos.

Make a percent bar graph that shows the relative frequencies of the types of homes.

Apartment

House

Condo

Type of home

Relative frequency (%)

Homes Ann cleaned last weekend

key idea

The relative frequency of a category is the ratio of the number in that category to the total number.

Relative frequency

number in a category

total number

Relative frequencies are often written as percents.

solution

To make the percent bar graph, you need to know the relative frequency of each type of home. Start by finding the total number of homes Ann cleaned last weekend.

Ann cleaned a total of 10 homes last weekend. Write the relative frequency of each type as a fraction with a denominator of 10.

Homes Ann cleaned last weekend
Type of home	Apartment	House	Condo
Frequency	5	3	2
Relative frequency	5 10	3 10	2 10

Now write each relative frequency as a percent. Start with the relative frequency of apartments,

Since a percent tells you a part out of 100, write an equivalent fraction with a denominator of 100.

100

The relative frequency of apartments is 50%. You can write the other relative frequencies as percents the same way.

Homes Ann cleaned last weekend
Type of home	Apartment	House	Condo
Frequency	5	3	2
Relative frequency	50%	30%	20%

Now use the relative frequencies to make a percent bar graph. Set the height of each bar to its relative frequency written as a percent. For example, the bar for apartments should have a height of 50%.

Apartment

House

Condo

Type of home

Relative frequency (%)

Homes Ann cleaned last weekend

Looking for more? Try these:

Lesson: Percents

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Teacher tools

Work it out

Not feeling ready yet? These can help:

II.6Create relative frequency tables

II.7Create bar graphs

II.5Interpret categorical data

Lesson: Percents

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