NCDAP Data Analysis & Statistics 2

Question 1

A number cube (die) is rolled once. What is the probability of rolling a number greater than 4?

Accepted Answer

1/3

Answer

1/2

Answer

2/3

Answer

1/6

Question 2

The following scores were recorded: 60, 75, 80, 80, 90, 95. What is the range?

Accepted Answer

35

Answer

25

Answer

80

Answer

30

Question 3

A line graph shows a company's sales increased from $20,000 in 2020 to $30,000 in 2022. What was the percent increase?

Accepted Answer

50%

Answer

33%

Answer

25%

Answer

10%

Question 4

Which measure of central tendency is MOST affected by an extreme outlier in a data set?

Accepted Answer

Mean

Answer

Median

Answer

Mode

Answer

Range

Question 5

A bag contains 4 red marbles, 3 blue marbles, and 3 green marbles. If one marble is drawn at random, what is the probability it is blue?

Accepted Answer

3/10

Answer

1/3

Answer

3/7

Answer

1/4

Question 6

The stem-and-leaf plot shows the values: 2|3 4 5, 3|1 6, 4|0 2. How many data values are there in total?

Accepted Answer

7

Answer

6

Answer

8

Answer

5

Question 7

If the average of four numbers is 15, what is their sum?

Accepted Answer

60

Answer

45

Answer

30

Answer

75