Guides ยท Science
Statistical Significance Basics
Test differences with simple stats
This guide explains what statistical significance means, how to choose alpha, estimate sample size, avoid peeking, and interpret p-values alongside effect sizes.
- statistical significance
- p-value
- sample size
- alpha
- effect size
Define hypotheses
State null and alternative clearly before testing.
Pick alpha and power
Choose significance level (often 0.05) and plan sample size for desired power.
Avoid peeking
Do not stop early on random swings; use sequential methods if needed.
Interpret carefully
Pair p-values with effect size and confidence intervals; consider practical impact.
Keep Exploring
Guides
Citizen Science Getting Started
Participate in real studies with simple tools and protocols.
How it works
Immune Response
See how barriers, immune cells, and antibodies coordinate to detect threats and clear infections.
Why it matters
Climate Resilience
Climate resilience reduces damage from climate-related hazards and speeds recovery.
Comparison
Mitosis vs Meiosis
Mitosis makes matching cells for growth and repair, while meiosis creates sex cells and introduces genetic variation.