The shaded area to the right is the “*p*-value”, to the left is the *statistical power*. The line bisecting the curve on the left is the *effect size*. The shape of the curves is determined by the *sample size*.

*p*-value”, to the left is the *statistical power*. The line bisecting the curve on the left is the *effect size*. The shape of the curves is determined by the *sample size*.