IXL | Measures of center and spread

Bob got a summer job at Pete's Pizzeria. Today, he tracked the number of toppings on each pizza he made.

Pizza orders

number line label

Number of toppings

Complete the sentences.

The mean of the data is

toppings. It describes the

spread

of the distribution.

1 ... center

1 ... spread

2 ... center

2 ... spread

ref_doc_title.

Learn with an example

question

During his shift at Speedy Eats Taco Truck, Dan tracked the number of toppings each customer ordered.

Taco toppings

number line label

Number of toppings

Complete the sentences.

The range of the data is

toppings. It describes the

spread

of the distribution.

6 ... center

6 ... spread

7 ... center

7 ... spread

key idea

The mean and median describe the center of a distribution.

The range describes the spread of a distribution.

solution

The range is the difference between the greatest and least values.

Taco toppings

number line label

Number of toppings

The greatest value is 7 toppings. The least value is 1 topping. Subtract to find the range.

–

The range is 6 toppings. It describes the spread of the distribution.

Looking for more? Try this:

$Confetti$

Excellent!

Now entering the Challenge Zone—are you ready?

Questions
answeredQuestions

Time
elapsedTime

hr	min	sec
00	00	08

SmartScore
out of 100
IXL's SmartScore is a dynamic measure of progress towards mastery, rather than a percentage grade. It tracks your skill level as you tackle progressively more difficult questions. Consistently answer questions correctly to reach excellence (90), or conquer the Challenge Zone to achieve mastery (100)! Learn more

Teacher tools

Work it out

Not feeling ready yet? These can help:

JJ.7Calculate quartiles and interquartile range

JJ.2Calculate mean, median, mode, and range

JJ.9Identify an outlier and describe the effect of removing it

Excellent! You got that right!

Jumping to level 1 of 1

Excellent!