Videos
AP Statistics
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9 video lessons
9:03
Exploring One-Variable Data
Measure the same thing twenty times and you will not get the same answer twenty times. Twenty students m…
7:49
Exploring Two-Variable Data
Thirty children from one primary school. For each child, two numbers: shoe size, and a reading test scor…
7:31
Collecting Data
An online poll collects thirty thousand replies. A careful survey asks only one thousand people. Which i…
8:39
Probability, Random Variables, and Probability Distributions
A basketball player makes five shots in a row. The crowd is sure she is hot tonight. But watch what chan…
7:32
Sampling Distributions
Two thousand students go to this school, and some of them cycle here. We want to know what share. Nobody…
7:52
Inference for Categorical Data: Proportions
A city wants to know how many people support a new policy. We cannot ask everyone, so we ask two hundred…
7:38
Inference for Quantitative Data: Means
You already know the heart of inference. Take a sample, find its mean, then do it again and again. Even …
7:49
Inference for Categorical Data: Chi-Square
Roll a fair die sixty times. Every face should come up ten times. But it never does — eight here, thirte…
7:59
Inference for Quantitative Data: Slopes
Here is one class on a scatterplot: hours of revision along the bottom, test score up the side. The line…