Lecture 1: The Basics of Sampling Precision
Understanding the A Priori Procedure
Based on “From a Sampling Precision Perspective, Skewness Is a Friend and Not an Enemy!”
Welcome to Lecture 1!
Today we start an exciting journey into how we can plan our research better before collecting data. This might sound backwards, but it will make perfect sense soon!
1. What's Wrong with Traditional Statistics?
The Usual Approach
- Collect data first
- Run statistical tests
- Look at p-values
- Decide if results are "significant"
Problem: You make decisions after seeing the results! That leads to spurious significance.
