ES Subcommand (T-TEST command)

ES controls the estimation of the t-test effect size.

DISPLAY = boolean

An optional keyword that determines whether the effect size table is printed. TRUE is the default setting, which invokes the estimation of effect size. When FALSE is specified, effect size is not estimated, and the corresponding output table is suppressed.

STANDARDIZER = {SD} {CORRECTED_SD} {AVERAGE}

An optional keyword that controls how the standardizer is computed in estimating the Cohen's d and Hedges' correction for each variable pair. SD is the default setting (Standard deviation of the difference). The other options are CORRECTED_SD (corrected standard deviation of the difference) and AVERAGE (average of variances). The keyword takes effect only in the related-sample t-test, and it is ignored by the one-sample and independent-sample t-tests, or when DISPLAY = FALSE.