Histogram

In this lesson you can learn what is and how to insert histogram chart.

Histogram and Pareto Diagram are two types of charts connected with quality management that can be created in Excel. A histogram is simply a column chart which the present number of occurrence of the characteristic most often in the range of numbers. Besides quality control, a histogram is also used in statistics. Sample histogram looks like this:

example of histogram in Excel

You can learn what are the rules for creating a histogram and how to create a histogram in Excel. For starters you need a table of data. Let it be, that you analize results of the exam. An example table is:

sample table resulst of the exam

The main principles to create a histogram:

  • data should be divided into equal intervals
  • number of compartments should be 5 -15 so that the histogram was clear
  • frequency in any of the intervals should not be equal to 0
  • between the columns is not to be gaps

Creating a histogram in Excel is very simple. First, based on the data table you create a column chart. First delete the legend, it will not be needed.

histogram without legend

Then you remove the spaces between the columns. Just right click on the column and choose 'Format Data Series'. A dialog box appears, where you choose 'No gap'.

histogram Format Data Series no gap

The most important steps you have already completed. Histogram have to be improved. Depending on your vision, you can choose the right colors to increase transparency. One possibility is the chart styles. In addition, you must add the data series. The finished sample histogram looks like this:

example of histogram in Excel

The results of the examination is of course only an example. You can also use histogram to illustrate population demographics and broad capabilities in quality control.

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