Help using Base SAS procedures

need to convert percentiles to NCEs

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Super Contributor
Posts: 279

need to convert percentiles to NCEs

I want to convert percentiles (pr) to NCE. I found the following formula:
nce = invnorm(pr/100)*21.06 + 50, where invnorm is the inverse normal probability function

I can't find invnorm anywhere in SAS. Any thoughts?
Super Contributor
Super Contributor
Posts: 365

Re: need to convert percentiles to NCEs

Hello Gregg B,

It looks like you need the PROBIT function.

Sincerely,
SPR
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