1 Sample t-Test: Interval Estimation - Quick Tab

Select the Quick tab of the 1 Sample t-Test: Interval Estimation dialog box to access options to compute a confidence interval for E_s, the standardized effect size (Hedges & Olkin, 1985; Steiger & Fouladi, 1997) and to compute a confidence interval for delta, the noncentrality parameter of the noncentral t-distribution.

Observed t

In the Observed t box, enter the observed value of the one sample t-statistic.

Sample Size (N)

In the Sample Size (N) box, enter the sample size (N) for the experimental group used in the study.

Conf. Level.  In the Conf. Level box, enter the confidence level for the confidence interval calculation. Confidence limits are presented for two quantities:

Delta

The upper and lower limits are for a confidence interval on δ, the noncentrality parameter of the noncentral t-distribution.  

Standardized Effect

These upper and lower limits are for E_s.