IXL | Interpret charts and graphs to find the mean | 5th grade math

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Some dealerships compared their vehicle sales.

Vehicle sales

Dealership

Number of vehicles

Ben's Used Cars

$five tally marks$

$five tally marks$

$five tally marks$

$one tally mark$

RV City

$five tally marks$

$five tally marks$

$five tally marks$

$one tally mark$

Clearance Cars

$five tally marks$

$five tally marks$

$five tally marks$

$five tally marks$

Ledbetter Auto Mall

$five tally marks$

$five tally marks$

$five tally marks$

$three tally marks$

Affordable Cars

$five tally marks$

$five tally marks$

$five tally marks$

Braverton Autos

$five tally marks$

$five tally marks$

$five tally marks$

Thompson Auto Warehouse

$five tally marks$

$five tally marks$

$two tally marks$

What is the mean of the numbers?

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or

Learn with an example

question

The parks department compared how many basketball hoops there are at each park.

Basketball hoops

Park

Number of basketball hoops

Linden Park

$five tally marks$

$five tally marks$

$five tally marks$

$two tally marks$

Riverfront Park

$five tally marks$

$five tally marks$

Palm Park

$five tally marks$

$five tally marks$

$four tally marks$

Canal Park

$five tally marks$

$three tally marks$

Kelly Park

$five tally marks$

$five tally marks$

$one tally mark$

Mooreland Park

$five tally marks$

$five tally marks$

$two tally marks$

What is the mean of the numbers?

key idea

The mean is the average of the numbers. You find the mean by adding the numbers together and then dividing by the number of numbers in the group.

solution

Read the numbers from the tally chart. Count the tally marks in each row.

17

10

14

8

11

12

First, count how many numbers are in the group.

There are 6 numbers.

Now add all the numbers together:

17 + 10 + 14 + 8 + 11 + 12 = 72

Now divide the sum by the number of numbers:

72 ÷ 6 = 12

The mean is 12.

Looking for more? Try these:

Lesson: Mean, median, mode, and range

or

$Confetti$

Excellent!

Now entering the Challenge Zone—are you ready?

Teacher tools

Work it out

Not feeling ready yet? These can help:

OO.2Find the mean

NN.1Interpret line plots with whole numbers

NN.6Interpret line graphs

NN.8Interpret bar graphs

NN.11Interpret frequency tables: one-step problems

FF.2Interpret tally charts

Lesson: Mean, median, mode, and range