Module 3 · Data Analytics: Statistics & Data Visualization
Sampling & Hypothesis Testing: lessons
Why sample means behave so predictably, what a p-value really means, and how much data you need.
3 lessons · 58 min
What this module teaches, what it asks of you first and how you practise it are on its syllabus page.
Open the syllabusThe Central Limit Theorem
18 minTake the mean of many samples and their distribution approaches a normal curve — almost whatever the shape of the original data. It is why most inferential statistics works.
Included with the track Simulation insidep-Values and Statistical Power
22 minA p-value answers a very specific question — and almost never the one you want to ask. Power tells you whether your experiment could find anything in the first place.
Included with the track Simulation insideConfidence Intervals
18 minWhat "95%" actually promises, and why an interval is more honest than a single p-value.
Included with the track Simulation inside