Create a cumulative histogram in Grapher

A cumulative histogram counts the number of observations in all bins. Unlike a traditional histogram in which bin values are totaled separately, each bin on a cumulative histogram is the sum of the values in a bin and all previous bins. Using a cumulative histogram is a good way to summarize your data.

Creating a cumulative histogram:

  1. Create your histogram by clicking the Home | New Graph | Statistical | Vertical Histogram (Grapher 12 Histogram) command.
  2. Select the histogram data file and click Open.
  3. Click on the Histogram object in the Object Manager to select it.
  4. Click on the Plot tab in the Property Manager.
  5. Click the next to Bins.
  6. Check the box next to the Display as cumulative plot option. The counts are automatically added to the previous bin to create each new bin.
  7. To display cumulative frequencies, check the box next to the Display as relative frequency option, as well. When finished, your cumulative histogram will look like the graph below.

Histogram and cumulative histogram in Grapher
A normal counts histogram is on the left. The cumulative counts histogram is on the right.



Updated May 2023

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