Just select your failure data and choose Histogram Weibull from QI Macros menu. Weibull analysis works well, even with small samples (less than 20). Weibull analysis is especially suited to failure rates (e.g., how long does a TV, PC, ball bearing or whatever operate before failing). Not all data is normally distributed (i.e., bell-shaped). Histograms & Capability Analysis ยป Weibull Analysis Weibull Analysis in Excel with QI Macros Use Weibull Analysis with Failure Rate Data
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