PERFORM — Graphics Overview

Several charts are available for examining your data and assessing performance.

Process Performance Analysis Charts

These charts provide a display of observed performance and the estimated variance components.

See:

• Performance Charts Form
• Process Performance Measures
• Stacked Bar Charts
• Variance Components

histograms

histograms provide a display of a data set and show where the values fall. This provides an understanding of the data in terms of shape, spread, and location.

See:

• histograms Form
• What is a Histogram?

Box & Whisker Plots

Box & Whisker plots provide a display of the Low, High, Q1, Q3, Median, and outlier points in a data set. It is particularly useful at comparing several groups.

See:

• Box & Whisker Plots Form
• What are Box & Whisker Plots?

Control Charts

Control charts display data through time and allow evaluation of through-time stability. When control limits are not used, a Run chart is displayed.

See:

• Variables Chart Setup Form
• Variables Chart Form
• What are Control Charts?

Frequency Plots

Frequency Plots display tables of frequencies, relative frequencies, or cumulative frequencies of groups in a data set. This is also useful for making comparisons among multiple groups.

See:

• Frequency Plots Form