Spread

Summary

the spread of a set of data can be measured using the range or the quartiles.

the range is the difference between the highest and the lowest values.

the quartiles and the median split a set of data into four equal parts.

Key Skills

  • calculate the range of a set of data
  • find the quartiles for a set of data
  • find the interquartile range for a set of data

Vocabulary

spreadquartileslower quartileupper quartilemedian, interquartile rangerange.