Practice 1

Where Do Data Come From

Practice 2

Samples, Good and Bad

Practice 3

What Do Samples Tell Us

Practice 4

Sample Surveys in the Real World

Practice 5

Experiments, Good and Bad

Practice 6

Experiments in the Real World

Practice 7

Data Ethics

Practice 8

Measuring

Practice 9

Do the Numbers Make Sense

Practice 10

Graphs, Good and Bad

Practice 11

Displaying Distributions With Graphs

Practice 12

Normal Distributions

Practice 13

Describing Relationships: Scatterplots and Correlation

Practice 14

Describing Relationships: Regression, Prediction, and Causation

Practice 15

The Consumer Price Index and Government Statistics

Practice 16

Thinking About Chance

Practice 17

Probability Models

Practice 18

Simulation

Practice 19

The House Edge: Expected Values

Practice 20

What Is a Confidence Interval

Practice 21

What Is a Test of Significance

Practice 22

Use and Abuse of Statistical Inference

Practice 23

Two-Way Tables and the Chi-Square Test