KYOTE Statistics and Probability 2

Question 1

A student's four test scores are 80, 85, 90, and 75. What score is needed on the fifth test to bring the average to 85?

Accepted Answer

95

Answer

90

Answer

100

Answer

85

Question 2

Two cards are drawn without replacement from a standard 52-card deck. What is the probability that both cards are aces?

Accepted Answer

1/221

Answer

1/169

Answer

1/52

Answer

4/52

Question 3

In a box-and-whisker plot, which feature represents the median?

Accepted Answer

The line inside the box

Answer

The left whisker

Answer

The right whisker

Answer

The right edge of the box

Question 4

A scatter plot shows a strong positive correlation between study time and test scores. What does this mean?

Accepted Answer

As study time increases, test scores also tend to increase

Answer

As study time increases, test scores decrease

Answer

Study time and test scores have no relationship

Answer

Both variables decrease at the same rate

Question 5

Which measure of central tendency is most affected by extreme outlier values?

Accepted Answer

Mean

Answer

Mode

Answer

Median

Answer

Range

Question 6

How many ways can 4 students be selected and arranged in a line from a group of 6 students?

Accepted Answer

360

Answer

24

Answer

720

Answer

15

Question 7

A coin is flipped 3 times. What is the probability of getting exactly 2 heads?

Accepted Answer

3/8

Answer

1/4

Answer

1/2

Answer

1/8