basic α, β, N, & effect size

Sideways Stats

Confidence ranges in a probability curve

Primer on probability curves

Sideways Type I error

Sideways Type I and Type II errors

beta = 0.50

Interaction of alpha and beta

Sample size and statistical power

Impact of sample size

Large effect size makes beta low

Impact of effect size

Finding the right hypothesis

When “not significant” is not failure

Truncated probability curves

Checking an upper-bound hypothesis - main page

Freeman​.blue – Main page