Friday, July 24, 2009

PROC SQL: functions

COUNT, FREQ, N: number of nonmissing values

NMISS: number of missing values

MIN: smallest value

MAX: largest value

RANGE: range of values

SUM: sum of values

SUMWGT: sum of the WEIGHT variable values(footnote 1)

AVG, MEAN: means or average of values

T: Student's t value for testing the hypothesis that the population mean is zero

PRT: probability of a greater absolute value of Student's t

USS: uncorrected sum of squares

CSS: corrected sum of squares

VAR: variance

STD: standard deviation

STDERR: standard error of the mean

CV: coefficient of variation (percent)

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