Cumulative Frequency Diagrams

Cumulative Frequency Diagrams

1. The interquartile range is a measure of the dispersion of a set of data

   • Eliminates extreme values and bases the measure of a spread in the middle 50% of the data

2. The interquartile range and the median can be found by drawing a cumulative frequency diagram

   • Add the frequency to the sum of the preceding frequencies to find the cumulative frequency