Weibull Analysis: Results (Raw Data)
Weibull and Reliability/Failure Time Analysis
Select variables via the
Weibull & Reliability/Failure Time Analysis dialog box
- Raw data
Copy button. Click the Copy button to copy either the selected text (if text has been selected) in the Summary box or all of the text (if no text has been selected) to the Clipboard. Note that the copied text retains formatting information (such as font, color, etc.).
Contract/Expand button Click the
Contract/Expand button to contract or expand the
Summary box. When contracted, you can see only one line of the
Summary box text and can scroll through the text using a scroll bar. Note that when contracted the text is scrolled so that the first non-blank line is at the top. When expanded (the default setting), the entire
Summary box will be displayed on the
Multiple Correspondence AnalysisResults dialog.
Quick
tab or the Advanced tab), then the spreadsheet will also contain the standard errors and confidence intervals for the parameter estimates. Note that the confidence intervals are based on the information matrix from the maximum likelihood estimation procedure, and they are only approximations (based on the normal distribution). In addition, in the case of the shape and scale parameters, they are adjusted to reflect the fact that the valid parameter space is bounded (i.e., shape and scale must be greater than 0). See Nelson (1990; Section 5.7) or Dodson (1994) for computational details. Also, Dodson (1994) cautions against the interpretation of confidence intervals computed from maximum likelihood estimates when the shape parameter is less than 2; in that case the variance estimates computed for maximum likelihood estimates lack accuracy.If the values were changed in the
Shape parameter or
Scale parameter boxes via the
Quick