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- 1. Multiple Choice
How do you find the median of a data set that has two middle numbers?

You pick the higher middle number

You pick the lower middle number

Add the two middle numbers and divide it by 2

Subtract the two middle numbers and divide by 2

- 2. Multiple Choice
Which measure of central tendency would best represent this data?

Mean

Median

Mode

Range

- 3. Multiple Choice
Which measure of central tendency best represents this data?

Mean

Median

Mode

Range

- 4. Multiple Choice
The mean of this data set is 17.8. What would happen to the mean if 40 was added to the data set?

The mean would not change

The mean would go up

The mean would go down

- 5. Multiple Choice
What is the first step when creating a box and whisker plot?

Find the median

Find the lowest and highest values

Order the data set

Find the median of the top and bottom halves

- 6. Multiple Choice
Which class has the higher median?

1st period

2nd period

They have the same median

- 7. Multiple Choice
Which class did better on the test?

1st period

2nd period

They both performed the same

- 8. Multiple Choice
How is the data distributed in this histogram?

Symmetrically

Skewed Right

Skewed Left

- 9. Multiple Choice
How is the data distributed in this histogram?

Symmetrically

Skewed Right

Skewed Left

- 10. Multiple Choice
What does the standard deviation tell us about the data set?

How spread out the numbers are

How much each number in the data set increases by

How much each number in the data set decreases by

- 11. Multiple Choice
What is normal distribution?

A symmetrical bell-shaped graph

A graph that is skewed to the right

A graph that is skewed to the left

- 12. Multiple Choice
What percent of data lies within 1 standard deviation from the mean?

95%

99%

68%

100%

- 13. Multiple Choice
You have a mean of 56 and a standard deviation of 4.3. What is +2 standard deviations from the mean?

60.3

47.4

51.7

64.6

- 14. Multiple Choice
The positive standard deviations on a normal distribution curve mean what?

Below average

Above average

Average

- 15. Multiple Choice
The negative standard deviations on a normal distribution curve mean what?

Below average

Above average

Average

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