Unit 6 Review: Measures of Center and Circle Graphs

When the question asks you to find the MEAN as a balance point, what are you calculating?

• the answer

• the average

When you have to calculate the MEDIAN of a set of data, what do you do?

• use DESMOS

• write the numbers in order from least to greatest and find the middle number

Answer explanation

If you have 2 numbers in the middle, find the average of those 2 numbers using DESMOS

What is the MOst frequently repeated number in a set of data?

• Mean

• Median

• MOde

The line plot shows the number of text messages sent by 7 people. What is the mean as a balance point for this set of data?

USE DESMOS! FUNC-MEAN

• 5

• 6

• 7

Answer explanation

MEAN means AVERAGE. To find the MEAN, add all the numbers and divide by the total amount of x's.

What is the mean as a balance point for this set of data?

USE DESMOS! FUNC-MEAN

• 5

• 6

• 7

What is the mean as a balance point for this set of data?

USE DESMOS! FUNC-MEAN

• 4

• 5

• 6

The line plot displays the number of points scored by 10 players. Which best represents the mean as a balance point of this set of data?

• Between 1 and 2 points

• Between 2 and 3 points

• Between 3 and 4 points

Answer explanation

The average is 3.5, which lands between 3 and 4 on a number line.

HINT: List the numbers in order least to greatest

Find the MEAN and MEDIAN (Middle)

Take 18 away, then find the MEAN and MEDIAN again

• The median will decrease

• There will be no mode

• The mean will not change

Devin surveyed 24 students about their favorite type of movie. This circle graph represents the results of the survey. How many students chose COMEDY?

• 2

• 4

• 6

• 12

Devin surveyed 24 students about their favorite type of movie. This circle graph represents the results of the survey. How many students chose ACTION?

• 2

• 4

• 6

• 12