Statistics & Probability (Review)

A statistical question is one that has variability, meaning more than one answer.

• True

• False

Which of the following is NOT a statistical question?

(Hint: Does it have only one answer?)

• What is your favorite movie?

• What is your favorite food?

• How many siblings do you have?

• What's the name of your math teacher?

What is mean in math?

• The difference between the highest and lowest number.

• The average or typical number within a data set.

• The middle value.

• The number(s) seen most frequently.

Find the mean of the following data set.

(Hint: "Average")

9 9 7 1 4

• 0

• 1

• 6

• 9

What is median in math?

• The difference between the highest and lowest number.

• The average or typical number within a data set.

• The middle value.

• The number(s) seen most frequently.

Find the median of the given data set.

(Hint: "Middle")

10 4 2 1 2 2

• 2

• 4

• 10

• 21

Josiah went on a bird watching trip and jotted down the number of birds he saw each day.

10 birds, 7 birds, 7 birds, 10 birds, 8 birds

What is the mode of the numbers?

• 7

• 10

• 7 and 10

• There is no mode.

10 s 4 9 6

The range of the following data set is 8. Which number, when replaced for s, can make this statement about the data's range true?

• 0

• 1

• 2

• 8

How many people are there in all?

Note: Click the image to make it larger.

• 10

• 12

• 14

• 15

Are there fewer countries that have 40-59 athletes or countries that have 80-99 athletes?

(Hint: We reviewed this in class.)

• 40-59 athletes

• 80-99 athletes