Hello, Support Staff!

Please interpret both PRE-LEAN AND POST-LEAN CHARTS.Please compare and contrast these probability plots.Do they both have normal distributions?

If they both have normal distributions, can we use a two-sample t-test (parametric)?Or should we use a Mann-Whitney (non-parametric)?

Also, if these plots show normality, can we use Anderson-Darling (non-parametric)as well?

Please compare their P-values as well.Are they both statistically significant?

Which chart shows improvement?The Pre-lean or Post-lean?

Please explain in detail and state your conclusions.

I already attached the charts......it is in jpeg format.

Thanks for your support!

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