I have some data for which I have calculated z-scores -does anyone know if there is a function or built-in format that will return the p-values? It's data I have standardized, so I end up with just a number and a standard error, so I can't run it through any of the statistical procs. I'm using v 9.4.
Thanks -
PROBNORM
But PROC TTEST can take statistics and do calculations. See the example in the documentation.
PROBNORM
But PROC TTEST can take statistics and do calculations. See the example in the documentation.
Thanks! PROBNORM is giving me values similar to those in the z-score table.
One-sided or two-sided? Use the CDF function. See "Four essential functions for statistical programmers."
z = -1.96;
prob = 2 * cdf("Normal", z); /* two-sided when z < 0 */
z = 1.96;
prob = 2 * (1 - cdf("Normal", z)); /* two-sided when z > 0 */
One-tailed - so looks like I just drop the '2*'. And thanks for the reference!
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