1. Exploratory Data Analysis
1.4. EDA Case Studies
1.4.2. Case Studies
1.4.2.9. Airplane Polished Window Strength

1.4.2.9.4.

Lognormal Analysis

Plots for Lognormal Distribution

The following plots were generated for a lognormal distribution.

Conclusions

We can make the following conclusions from these plots.

1. The optimal value, in the sense of having the most linear probability plot, of the shape parameter is 0.18.

2. At the optimal value of the shape parameter, the PPCC value is 0.986.

3. At the optimal value of the shape parameter, the estimate of the location parameter is -9.96 and the estimate of the scale parameter is 40.17.

4. Fine tuning the estimate of the shape parameter (from 0.2 to 0.18) has minimal impact on the PPCC value.