Inferential Statistics

• A

• B

• C

• D

Determine the difference in the interquartile ranges.

• 25

• 20

• 30

• 15

How much greater is the median for men than the median for women?

• 5

• 4

• 3

• 2

How much greater is the median amount earned this year than the median amount eared last year?

• 19.5

• 18.5

• 17.5

• 20.5

_____________________ statistics consists of generalizing from samples to populations, performing estimations and hypothesis tests, determining relationships among variables, and making predictions.

• mathematical

• descriptive

• inferential

• population

A travel club has 3,000 members. A random sample of 50 of the club members found that 12 people like mountain vacations best. Which statement is NOT supported by the sample data?

• Twenty-four percent of those sampled say they like mountain vacations best.

• An estimated 720 club members would likely say they enjoy mountain vacations best.

• Almost one-quarter of club members would likely say they enjoy mountain vacations best.

• More than 2,500 club members would likely say they prefer other vacations over mountain vacations.

What inference can you draw from this survey?

• I can infer that most students in this school like pizza.

• I can infer that very few students like hamburgers.

• I can infer that their favorite is corn dogs.

• I can infer that most students in this school like hamburgers.

• A

• B

• C

• D

Which statement is NOT supported by the information in the dot plots?

• A

• B

• C

• D

An ogive is used to determine

• Standard deviation

• Median

• Mode

• Mean