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  1. Learn how to use the frequency density formula to plot histograms and find missing values. See examples, a worksheet, and related lessons on histograms. Find out the formula, rearrangement, and common misconceptions.

  2. Learn how to calculate and use frequency density to draw and interpret histograms with grouped data. Find definitions, formulas, examples and exam tips for IGCSE Maths: Extended.

  3. Learn how to calculate and plot frequency density, a key concept in histograms, with examples and a formula. Find out how to interpret different distributions from histograms and test your knowledge with a quiz.

  4. Learn how to calculate frequency density and relative frequency density for grouped data, and how to draw histograms with them. See examples, diagrams and related terms.

  5. Learn how to calculate frequency density and draw histograms from frequency tables. See examples, formulas, and tips for interpreting histograms.

  6. Frequency density is calculated by dividing the frequency by the class width (the class width is the difference between the upper limit of the class interval and the lower limit of the class interval). Frequency density allows for a meaningful comparison of different classes where the class width may not be equal.