If you're doing an experiment, a Power Analysis is a must. It ensures reproducibility by helping you avoid phacking and being fooled by false positives.

NOTE: This StatQuest assumes that you are already familiar with the concept of Statistical Power, Population Parameters vs Estimated Parameters and phacking. If not, check out the 'Quests:
Power:    • Statistical Power, Clearly Explained!!!  
Population Parmeters:    • Population and Estimated Parameters, ...  
phacking:    • phacking: What it is and how to avoi...  

And if you'd like to learn more about how the concepts shown here apply to more than just the normal distribution, check out the StatQuest on the Central Limit Theorem:    • The Central Limit Theorem, Clearly Ex...  

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0:00 Awesome song and introduction
0:42 Why we do a power analysis
2:40 Power analysis defined
3:14 Two factors that affect Power
4:06 How sample size affects Power
11:48 How to do a power analysis
15:10 Review of concepts

#statquest #statistics