The following form is used to configure Variables Control Charts. You can select the Location chart type (X, Mean, Median, or None) and the Dispersion chart type (Range, Moving Range, Standard Deviation, Variance, or None). The method to used to calculate control limits, the centerlines, axis labels, and the number of standard errors to use may be selected. Chart calculations can be divided by sets.

There are various configurations available for the file layout. Subgroups can be in rows, in columns indexed by a sample variable, in columns indexed by a specific point count, or individual values in single columns. In addition, data for several charts can be included in a single file. Charts can be distinguished by being in separate columns or by grouping variables.

The recommended selection order is to select the Location Chart type, then the Dispersion Chart type, and then the Dispersion Limit Calculations. This is because selecting the Dispersion Chart type and Dispersion Limit Calculations automatically change the Location calculations to match. The Location Limits can the be changed if desired.

**File**: Open or edit a data file, select the Process If options, or return to the Main Form.**Edit**: Copies or pastes selected text.**View**: Provides the ability to enlarge the Form size for easier viewing.**Help**: Calls up this file.

These buttons provide quick access to the following tasks.

- Returns to the
__Main Form__. - Opens a Data File.
- Displays the
__Data Editor__. - Copies Selection to the clipboard.
- Pastes text from the clipboard
- Enlarges/Reduces Form size for easier viewing.
- Brings up the
__Main Form__. - Brings up the Help file.
- Hides the form.

The data variables found in the data editor will be displayed here.

These buttons are used to select or deselect the data variables for the subgroups or charts, depending on the layout selection.

The selected chart variables will be shown here. These variables my represent either separate charts or subgroups found in rows, depending on the layout selection.

The variables used to generate separate charts will be shown here.

The data variable defining the sample number is displayed here when this option is selected.

When this check box is checked, a constant sample size may be entered. Data can then be in a single column and subroups will be generated sequentially by the count entered here.

This variable is used to separate the analysis by sets. When a variable is selected, a vertical bar will be found between each set on the control chart. Separate control limit and centerline calculations will be generated for each set.

Sets do not need to be contiguous. In other words, values with Set=1 can be followed by values with Set=2, which can be followed by values with Set=1. All values with Set=1 will then be used to generate the limits and centerlines for all values of Set=1. This will allow you to separate a middle section.

When multiple variables are found in the Chart Variables box, this selection allows you to define whether the multiple variables represent subroups found in rows, or separate variables found in columns.

Selection the location chart type here. The options are: X, Mean, Median, or None.

- Select the method to generate the Location Chart Control Limits here.
__For X Charts:__- Average MR
- Median MR
- Standard Deviation
- Known Standard Deviation
- Centerline Only
- User Defined
- None

- Average Range
- Median Range
- Average Standard Deviation
- Median Standard Deviation
- Average Variance
- Average MR of the Means or Medians
- Median MR of the Means or Medians
- Standard Deviation of the Means or Medians
- Known Standard Deviation
- Centerline Only
- User Defined
- None

Select the Centerline method here. The option are to use the Mean or Median location statistic, or use a Known Mean.

When this box is checked, no lower limit will be displayed if it is negative.

Click this button to display the Variables Chart.

Select the type of Dispersion chart. For X charts you can select the Moving Range or None. For other charts, you can select the Range, Standard Deviation, Variance, or None.

Select the method to generate the Dispersion Chart Control Limits here.

__For MR Charts:__- Average MR
- Median MR
- Standard Deviation
- Known Standard Deviation
- Centerline Only
- User Defined
- None

__For the Range, Standard Deviation, and Variance Charts:__- Average Range
- Median Range
- Average Standard Deviation
- Median Standard Deviation
- Average Variance
- Average MR of the Dispersion Statistic
- Median MR of the Dispersion Statistic
- Standard Deviation Dispersion Statistic
- Known Standard Deviation
- Centerline Only
- User Defined
- None

Select the Centerline method here. The option are to use the Mean or Median Dispersion statistic, or use a Known Standard Deviation.

Select the number to use to determine the Moving Range. Most typical is to use a range of two successive values. A larger number can be used for processes that change slowly.

Any variable may be selected to be displayed as X-axis labels. For example, the set number or the count values could be used. This can also be used for a date variable entered as a real number, such as 10.12 for October 12.

The standard error to be used in the control limit calculations may be entered here.

These buttons are used to select or deselect the data variables used to generate separate charts.

This button is used to select or deselect the data variable to define the sample number.

Use this button to select a variable to separate the analysis by sets. When a variable is selected, a vertical bar will be found between each set on the control chart. Separate control limit and centerline calculations will be generated for each set.

Sets do not need to be contiguous. In other words, values with Set=1 can be followed by values with Set=2, which can be followed by values with Set=1. All values with Set=1 will then be used to generate the limits and centerlines for all values of Set=1. This will allow you to separate a middle section.