Sample Size Calculation & Power Analysis: Study Planning & Statistical Testing

Effect Sizes and Statistical Power - Complete Guide

Feb 9, 2026
STATISTICS

Statistical significance (p-value < 0.05) tells you an effect exists; effect size tells you how big it is. Large samples...

10 min Read

Sampling and Survey Design - Complete Guide

Feb 9, 2026
STATISTICS

Every statistical study begins with a fundamental question: How do we choose who to study? Sampling is the process of...

10 min Read

Sample Size to estimate mean

Feb 9, 2026
STATISTICS

Sample size to estimate mean The minimum sample size required to estimate the population mean $\mu$ is $$ \begin{aligned} n...

2 min Read

Sample size to estimate proportion

Feb 9, 2026
STATISTICS

Sample size to estimate proportion The minimum sample size required to estimate the population proportion is $$ n =p*(1-p)\bigg(\frac{z}{E}\bigg)^2 $$...

3 min Read

Sample size to test mean

Feb 9, 2026
STATISTICS

Sample size to test mean The minimum sample size required to test the hypothesis about the population mean $\mu$ is...

1 min Read