We've already learnt about the range, which is a measure of spread in a data set. Once we are able to calculate the range in a data set, we can start to compare and make judgments about different data sets and potentially spot any outliers.

Now let's compare the spread of some data sets and graphs.

Worked Examples

Question 1

Look at the data sets below. Which data set has the largest range?

$101,105,118,129,136$101,105,118,129,136
A
$19,23,25,28,29$19,23,25,28,29
B
$22,25,43,64$22,25,43,64
C
$104,107,113,120,125$104,107,113,120,125
D

QUESTION 2

Do the line plots shown have the same range?

Yes
A
No
B

Outcomes

4.DP2.03

Describe the shape of a set of data across its range of values, using charts, tables, and graphs (e.g. “The data values are spread out evenly.”; “The set of data bunches up around the median.”)

Recognising the spread of data

Worked Examples

Question 1

QUESTION 2

Outcomes

4.DP2.03

What is Mathspace

About Mathspace