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.
Look at the data sets below. Which data set has the largest range?
$101,105,118,129,136$101,105,118,129,136
$19,23,25,28,29$19,23,25,28,29
$22,25,43,64$22,25,43,64
$104,107,113,120,125$104,107,113,120,125
Do the line plots shown have the same range?
Yes
No
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.”)