Unit 1 - Topic 1

Question 1

What is Statistics?

Answer 1

The study of variability

Question 2

What are the 2 branches of AP Stats?

Answer 2

Inferential Statistics and Descriptive Statistics

Question 3

What are descriptive statistics?

Answer 3

Tell me what you got! Describe to me the data that you collected, and use pictures (graphs) or numerical summaries like mean, median, range, etc.

Question 4

What are inferential statistics?

Answer 4

Look at your data, and use that to say stuff about the BIG PICTURE.
Like tasting soup, a little sample can tell you a lot about the big pot of soup (the population).

Question 5

Compare Descriptive and Inferential Statistics.

Answer 5

Descriptive tells you about the data that you have. It describes the data.
Inference uses the data you have to try to say something about an entire population.

Question 6

What is data?

Answer 6

Any collected information.
Generally, each little measurement.
If there is a survey about liking porridge, the data might be “yes, yes, no, yes, yes.”
If it is the number of saltines someone can eat in 30 seconds, the data might be “3, 1, 2, 1, 4, 3, 3, 4”.