PSSA PSSA Data Analysis and Statistics 2

Question 1

A bag contains 4 red marbles, 3 blue marbles, and 5 green marbles. If one marble is drawn at random, what is the probability it is NOT green?

Accepted Answer

7/12

Answer

5/12

Answer

1/2

Answer

1/3

Question 2

The following data represents students' quiz scores: 70, 75, 80, 80, 85, 90, 95. What is the range?

Accepted Answer

25

Answer

15

Answer

20

Answer

30

Question 3

A pie chart shows that 25% of students chose math as their favorite subject. If 200 students were surveyed, how many chose math?

Accepted Answer

50

Answer

25

Answer

40

Answer

75

Question 4

Which measure of central tendency is MOST affected by an outlier (an extremely high or low value)?

Accepted Answer

Mean

Answer

Mode

Answer

Median

Answer

Range

Question 5

A double bar graph compares boys' and girls' favorite sports. If 15 boys and 10 girls prefer swimming, what fraction of the total (25) prefer swimming?

Accepted Answer

3/5

Answer

1/5

Answer

2/5

Answer

4/5

Question 6

A frequency table shows: 1-10: 5 students, 11-20: 8 students, 21-30: 12 students, 31-40: 3 students. Which interval has the highest frequency?

Accepted Answer

21–30

Answer

1–10

Answer

11–20

Answer

31–40

Question 7

If you flip a fair coin twice, what is the probability of getting heads both times?

Accepted Answer

1/4

Answer

1/2

Answer

3/4

Answer

1/3