What is Omega square?
1) is a strength of effect measure that provides a correction to Cohen's d overestimate.
2) is a statistical tool for adapting ordinal scales for use with t-tests.
3) is a strength of effect measure that provides a larger estimate than eta square.
4) is a strength of effect measure that provides a correction to eta square's overestimate.
5) is the multiplier used in computing confidence intervals.