Change the Distribution Parameters in a Probability Distribution Analysis

This topic describes how to modify the values of the distribution parameters in a Probability Distribution Analysis.

You can change the distribution parameters from the Analysis Summary workspace or from any of the plot tabs in the left pane.

Steps

  1. Access a Probability Distribution Analysis for which you want to modify the Distribution Parameters.
  2. If you want to modify the values of the Distribution Parameters from the Analysis Summary workspace:

    1. In the bottom section, select Distribution Parameters, and then select .

      The Calculate check boxes appear below each of the parameters.

      Distribution Parameters

    2. Clear the Calculate check box next to the parameter(s) whose value you want to modify.

      The parameter field(s) are enabled.

    3. Enter the desired value for the parameter.
    4. Select .

      Note: If you reselect the Calculate check box after manually entering data, the manually entered data for the parameter will not be retained. If you decide not to use the parameters you entered, select , and the previous selection will be used in the calculations.

      The system recalculates the analysis based on the selected distribution parameter.

    -or-

    If you want to modify the values of the distribution parameters from one of the plot tabs (e.g., Probability Plot tab):

    1. In the left pane, select the Probability Plot tab.

      The Probability Plot appears in the workspace.

      Probability Plot Workspace

      Note: You can also change distribution parameter via the PDF Plot or CDF Plot tabs.

    2. In the upper-right corner of the workspace, select Distribution Options, and then select Distribution Parameters.

      The Edit Distribution Parameters window appears.

      Distribution Parameters

    3. Clear the Calculate check box next to the parameter(s) whose value you want to modify.

      The parameter field(s) are enabled.

    4. Enter the desired value for the parameter, and then select OK.

      Note: If you reselect the Calculate check box after manually entering data, the manually entered data for the parameter will not be retained. If you decide not to use the parameters you entered, select Cancel, and the previous selection will be used in the calculations.

      The system recalculates the analysis based on the selected distribution parameter.

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