So … I'd like to know which IQ score (sd=15) corresponds to a given percentile.
The straigtforward way in R is to ask
percentile is between 0 and 100 and
sample is a very large number. Occasionally, not large enough for sufficient accuracy.
Does R have a more accurate algorithm? I've googled, and found math that's over my head to the extent that I can't turn it into R code.
Any and all hints and suggestions appreciated.