Related Topics:
	Application Setup

Application Setup Weibull++ Folios Page

The Weibull++ Folios page of Weibull++/ALTA's Application Setup allows you to set the options that apply only to Weibull++ folios. Options that apply to both Weibull++ and ALTA appear on other pages.

• Use the Default Analysis Method area to set the default analysis method for data sheets. Note that the options are different for time-to-failure data sheets and free-form data sheets as free-form data sheets do not support the MLE method.

• Use the Default Ranking Method area to select the default ranking method for rank regression analysis.

• Use the Default Confidence Bounds Method area to select the default method used to calculate the confidence bounds.

• Use the settings in the Default Grouped Data Settings area to set how Weibull++ assigns an individual median rank value to each data point (observation) within each group. When you select an option and plot the data, the points in each group will appear vertically aligned. If you do not select an option then the observations in each group will be represented by a single point at the highest median rank value within each group.

• • Select Ungroup on regression to fit the regression line to all data points in each group. If not selected, only the points with the highest median rank value within each group will be considered when fitting a line to the points.

  • Select Ungroup on MLE to plot all of the data points in each group on the MLE probability plot. If not selected, only the points with the highest median rank value within each group will be plotted. The line is independent of whether data points are treated as grouped or ungrouped.

• Analysis Summary Options

• • To display the theta parameter in the control panel analysis summary area when using the Weibull distribution, select the Show Theta option. Theta is defined as the sum of the scale and location parameters (Eta and Gamma):

• • To display the correlation coefficient in the control panel analysis summary area, select the Show correlation coefficient option. Note that the correlation coefficient is only applicable when using rank regression as the analysis method.

  • To display the likelihood function value in the control panel analysis summary area, select the Show likelihood value (LK) option.