Cumulative Frequency Graphs and Boxplots – A Level Mathematics AQA Revision

Cumulative Frequency Graphs and Boxplots are tools for visualising data distribution.
Cumulative frequency graphs plot cumulative frequencies of a dataset against class interval upper boundaries, resulting in a smooth curve.
These graphs provide a representation of percentiles to understand the distribution’s central tendency, spread, and skewness.
Boxplots display key statistics such as the median, upper quartile, lower quartile, and potential outliers.
Boxplots showcase the interquartile range and the overall data distribution, focusing on the middle 50% of the data and identifying any potential outliers.
Using these tools enhances the understanding of patterns, trends, and characteristics in datasets, aiding in complex statistical information interpretation.