AMC 8 Data Analysis & Statistics

Question 1

The test scores of 5 students are 72, 85, 90, 68, and 95. What is the mean score?

Accepted Answer

82

Answer

80

Answer

85

Answer

78

Question 2

The ages of seven children are 8, 11, 7, 9, 12, 10, and 9. What is the median age?

Accepted Answer

9

Answer

9.5

Answer

10

Answer

11

Question 3

In a class, monthly books read: 5 students read 1 book, 8 read 2, 4 read 3, and 3 read 4. What is the mode?

Accepted Answer

2

Answer

1

Answer

3

Answer

4

Question 4

The high temperatures for a week were 72, 68, 75, 80, 65, 70, and 74 degrees. What is the range?

Accepted Answer

15

Answer

10

Answer

12

Answer

18

Question 5

A bar graph shows enrollment per grade: Grade 5 has 120, Grade 6 has 135, Grade 7 has 115, and Grade 8 has 130 students. What is the total enrollment?

Accepted Answer

500

Answer

490

Answer

510

Answer

520

Question 6

Hours studied per week by 6 students: 3, 5, 7, 4, 6, 5. What is the mean number of hours?

Accepted Answer

5

Answer

4.5

Answer

5.5

Answer

6

Question 7

A survey of 30 students found: 12 chose red, 8 chose blue, 6 chose green, 4 chose yellow. What fraction chose blue?

Accepted Answer

4/15

Answer

8/15

Answer

1/4

Answer

2/15