Histogram chart

Histogram chart properties | Configuring a Histogram chart | Histogram chart calculations

A Histogram chart (also referred to as a Normal chart), is a bar graph that shows the distribution of a data set.

The Histogram graphically shows the following:

In the following Histogram chart example, each bar represents a sample subgroup. The lower specification limit (LSL) and upper specification limit (USL) lines are shown and labeled accordingly. These values can be set to calculate automatically from a data source, or they can be entered manually in the configuration dialog box. The normal curve is also shown to illustrate the shape of the normal distribution.

On the right side of the Histogram chart, descriptive statistics can be shown. By default, capability statistics (e.g., Cp, Cr) and process capability statistics (e.g., Pp, Pr) are shown on the chart. You have the option of showing other statistics on the chart as well. For a complete list of the available statistics, refer to Descriptive Statistics in the overview section.


See Also

Quality (SPC) Charts Overview

SPC Chart Types