Question 1

A box plot summarizes resting heart rates. If the minimum is 32 and maximum is 102, what is the range?

Accepted Answer

70

Answer

16

Answer

31

Answer

62

Question 2

If the lowest and highest values are removed from a data set, what happens to the standard deviation?

Accepted Answer

It would decrease.

Answer

It would become zero.

Answer

It would increase.

Answer

It would remain the same.

Question 3

A poll has 57 percent in favor with a margin of error of 3 percent. What is the plausible range?

Accepted Answer

Between 54 percent and 60 percent.

Answer

Exactly 57 percent.

Answer

More than 60 percent.

Answer

Less than 54 percent.

Question 4

A list is x, 24, 32, 33, 37, 42, 45. If the range equals the median, what is the value of x?

Accepted Answer

12

Answer

21

Answer

15

Answer

23

Question 5

Mean of 5 months is 325. Month A=400, C=286, D=350, E=290. How many were produced in month B?

Accepted Answer

299

Answer

300

Answer

315

Answer

325

Question 6

A study has a mean of 25.9 mpg and a margin of error of 2.6. Which value is plausible for the mean?

Accepted Answer

24 mpg

Answer

35 mpg

Answer

29 mpg

Answer

32 mpg

Question 7

In the scientific method, which group is used as a standard of comparison to test a hypothesis?

Accepted Answer

Control group

Answer

Real population

Answer

Sample group

Answer

Variable group

Question 8

If a graph distribution is skewed to the right (tail on the right), which statement is usually true?

Accepted Answer

Mean is greater than median.

Answer

Mean is less than mode.

Answer

Mean equals median.

Answer

Median is greater than mean.

Question 9

A data set has values between 500 and 600. If a 900 value is added, which measure will NOT change?

Accepted Answer

Mode

Answer

Mean

Answer

Range

Answer

Median

Question 10

Tia and Amir both found a median commute time of 30 minutes. What is the value of T minus A?

Accepted Answer

0

Answer

10

Answer

8

Answer

5

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