need to convert percentiles to NCEs

[GreggB]

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?

[SPR]

Hello Gregg B,

It looks like you need the PROBIT function.

Sincerely,
SPR