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Ansoft Designer / Ansys Designer 在线帮助文档：

Optimetrics >
   Setting up a Statistical Analysis >
       Setting the Distribution Criteria >
           Changing the Distribution Criteria for Every Statistical Setup

Changing the Distribution Criteria for Every Statistical Setup

To change the default distribution criteria for every statistical setup:

1. Make sure that the variable’s distribution criteria are not being overridden in any statistical setup.

2. If the variable is a design variable, do the following: On the Product menu, click Design Properties.

If the variable is a project variable, do the following: On the Project menu, click Project Variables.

The Properties dialog box appears.

3. Select Statistics.

4. Click in the Distribution column for the variable you want to change, and then select Uniform or Gaussian.

5. Optionally, if you want to change the distribution criteria, click in the Distribution Criteria column for the variable you want to change.

If the distribution type is Gaussian, the Gaussian Distribution dialog box appears. If the distribution type is Uniform, the Uniform Distribution dialog box appears.

6. If the distribution type is Gaussian, do the following:

a. Type the standard deviation in the Std. Dev text box.

b. Type the lower limit of the distribution in the Low Cutoff text box.

c. Type the upper limit of the distribution in the High Cutoff text box.

Designer will solve design variations using a Gaussian distribution within the low and high cutoff values.

7. If the distribution type is Uniform, do the following:

• Type a tolerance value in the text box.

Designer will solve design variations within the tolerance range of the starting value, using an even distribution.

8. Click OK.

See Statistical Cutoffs for additional information.

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