Data Interpretation and Statistics · Data

Histograms with Unequal Widths

Constructing and interpreting histograms where frequency density is used to represent data.

Key Questions

  1. 1Why do we use frequency density instead of frequency for unequal class intervals?
  2. 2How does the area of a bar in a histogram relate to the total number of observations?
  3. 3When is a histogram more appropriate than a bar chart for displaying data?

National Curriculum Attainment Targets

GCSE: Mathematics - Statistics
Year: Year 11
Subject: Mathematics
Unit: Data Interpretation and Statistics
Period: Data

Suggested Methodologies

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Cumulative Frequency and Box Plots

Comparing datasets using measures of central tendency and spread like the interquartile range.

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