Statistics Chapter

The GPA of students in a course at WMHS is approximately normal with a mean of 3.2 with a standard deviation of 0.3. What percent of students in the course have a GPA between  2.9 and 3.8? 

• 81.5%

• 47.5%

• 68%

• Cannot be determined

A _________ is a sample in which each individual or object in the entire population has an equal chance of being selected.

• Sample

• Population

• Random Sample

• Bias

What is a requirement of a statistical question?

• one set answer

• a variety of answers

Look at the Bar Graph "Student Grades". Which grade did the smallest number of students get?

• A

• B

• C

• D

How many students' favorite color is blue?

• 11

• 12

• 14

• 17

How many more boys picked basketball than girls?

• 1

• 4

• 5

• 6

How many students were surveyed in all?

• 21

• 17

• 22

• 23

Which of the following is an example of a quantitative variable?

• Supervising Manager

• Hours Worked

• Pay Scale Group

• Certification

Do more people enjoy Ham and pineapple or Pepperoni and Pepper?

• Pepperoni and Pepper

• Ham and Pineapple

Order the dot plots from least to greatest standard deviation.

• A, D, C, B

• B, C, D, A

• A, D, B, C

• B, C, A, D