Warranty Prediction - Options
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Stat > Reliability/Survival > Warranty Analysis > Warranty Prediction > Options

Choose to have Minitab estimate the parameters for the failure time distribution and the estimation method. For more information on selecting estimation methods, see Least squares estimates versus maximum likelihood estimates. Alternatively, you can enter the parameters from an analysis using Parametric Distribution Analysis.

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Distribution Estimates

Calculate optimal estimates: Choose to calculate optimal estimates.

Enter user-defined estimates: Choose to enter user-defined estimates.

Estimation Method

Maximum Likelihood: Choose to estimate the distribution parameters using the maximum likelihood method, which maximizes the likelihood function.

Least Squares (failure time(X) on rank(Y)): Choose to estimate the distribution parameters using the least squares (XY) method, which fits a regression line to the points in a probability plot.