Errors in formula
Standard deviation formula is wrong. Beware.
Yes, PM Formulas (PMP exam prep) is completely free and it doesn't have any in-app purchases or subscriptions.
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PM Formulas (PMP exam prep) is free.
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1.5 out of 5
2 ratings in Spain
Standard deviation formula is wrong. Beware.
The free App is Excellent! Great reference, review and study aid. Thank you!!!
Super very helpful.
Good for reference Not much help preparing for the PMP exam
I want my money back!