PSSA PSSA Data Analysis and Statistics 3

Question 1

A line plot shows the number of books read: × above 1, 2, 3, 4, 5. There are 3 X's above 3 and 2 X's above 5. What does this data tell us?

Accepted Answer

More students read 3 books than 5 books

Answer

Most students read 5 books

Answer

Equal students read 3 and 5 books

Answer

No students read 4 books

Question 2

The mean of five numbers is 12. Four of the numbers are 10, 14, 11, and 13. What is the fifth number?

Accepted Answer

12

Answer

10

Answer

11

Answer

14

Question 3

A pictograph uses a symbol of a book to represent 5 students. If a row shows 4 books, how many students does it represent?

Accepted Answer

20

Answer

4

Answer

9

Answer

25

Question 4

Which of the following is a correct definition of 'probability'?

Accepted Answer

The likelihood that an event will occur

Answer

The average of a set of numbers

Answer

The difference between the largest and smallest values

Answer

The most common value in a data set

Question 5

A scatterplot shows a positive correlation between hours studied and test scores. What does this mean?

Accepted Answer

As hours studied increase, test scores also increase

Answer

As hours studied increase, test scores decrease

Answer

Hours studied and test scores have no relationship

Answer

Test scores decrease as hours studied decrease

Question 6

A student rolls a standard number cube (1–6). What is the probability of rolling a number greater than 4?

Accepted Answer

1/3

Answer

1/6

Answer

1/2

Answer

2/3

Question 7

Two students each survey 20 classmates about their favorite color. Student A gets results that are very spread out; Student B's results are clustered near one value. Which student's data has a smaller range?

Accepted Answer

Student B

Answer

Student A

Answer

Both have the same range

Answer

Cannot be determined