AP Statistic Random Variable

What is the word in statistics for any characteristic or attribute of a person, place, or thing?

• variable

• descriptive statistic

• inferential statistic

• parameter

What is the branch of mathematics dealing with the collection, organization, analysis, interpretation and presentation of data?

• Algebra

• Geometry

• Probability

• Statistics

Which of the following is NOT true for a discrete variable?

• It is a numerical value

• It is quantitative, not qualitative

• You can usually calculate the mean of it

• It is usually a number with decimal numbers

The most common value of a study is called the...

• A
• B
• C
• D

• A

• B

• C

• D

• E

Is this a probability distribution?

• No, the sum of p(x) does not equal 1.

• Yes, all p(x) are between 0 and 1.

• No, all p(x) are not between 0 and 1.

• Yes, the sum p(x) is 1.

ASSUME THE GIVEN DISTRIBUTION IS NORMAL.

• A

• B

• C

• D

• E

Is this a probability distribution?

• No

• Yes

• A

• B

• C

• D

• E