p value to z score

Nuchto - 2022-04-04T10:01:57+00:00

Question: p value to z score

How do I determine the z score from a p value? Thanks!

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Expert Answer

Kshitij Singh answered . 2025-11-20

Using the ‘erfcinv’ function (part of core MATLAB) and writing it as an anonymous function:

 

z = @(p) -sqrt(2) * erfcinv(p*2);

produces:

zscore =

      -1.9600e+000     0.0000e+000     1.9600e+000

 

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