MoGEA Test Statistics, Probability, and Data Analysis

Question 1

What is the mean of the data set: 4, 7, 9, 12, 8?

Accepted Answer

8

Answer

7

Answer

9

Answer

10

Question 2

In the data set 3, 5, 7, 7, 9, 11, what is the median?

Accepted Answer

7

Answer

7.5

Answer

8

Answer

6

Question 3

A bag has 4 red and 6 blue balls. What is the probability of randomly picking a red ball?

Accepted Answer

2/5

Answer

1/4

Answer

3/5

Answer

2/3

Question 4

Which measure of central tendency is most affected by extreme outliers?

Accepted Answer

Mean

Answer

Mode

Answer

Median

Answer

Range

Question 5

A bar graph shows test scores for 5 students: 70, 85, 90, 75, 80. What is the range?

Accepted Answer

20

Answer

15

Answer

25

Answer

30

Question 6

Two events are independent if:

Accepted Answer

The outcome of one does not affect the probability of the other.

Answer

The outcome of one affects the probability of the other.

Answer

They cannot both occur at the same time.

Answer

They must both occur together.