Measures of Variability

1.

Multiple Choice

5 mins

1 pt

In order to find the median, the data must be sorted from least to greatest first.

True

False

2.

Multiple Choice

5 mins

1 pt

The number of miles that Jenna cycled each week for a 7-week period is shown:

36, 42, 28, 52, 48, 36, 31

What is the median number of miles Jenna cycled?

24

39

36

52

3.

Multiple Choice

5 mins

1 pt

Find the median for the following prices;

$12.50, $15.50, $15, $17.50, $11.50

$12.50

$15

$17.50

$11.50

4.

Multiple Choice

5 mins

1 pt

Given the data: 136, 150, 119, 150, 125, 140.

Find the upper quartile (Q3). (Hint... put the numbers in order and find the median to help you find Q3)

125

139.5

150

143

5.

Multiple Choice

5 mins

1 pt

Find the lower quartile (Q1) of the following set of scores 6, 7, 8, 9, 11, 13, 15

13

9

7

6

6.

Multiple Choice

5 mins

1 pt

Find the IQR (Q3 - Q1) of the data

20, 22, 25, 29, 31

30

25

21

9

7.

Multiple Choice

5 mins

1 pt

What is the range of speeds tested?

0.5 mph

0.3 mph

1.5 mph

1.3 mph

8.

Multiple Choice

5 mins

1 pt

What is the range of miniature golf scores?

44

23

29

39

9.

Multiple Choice

5 mins

1 pt

The table shows the points earned by contestants in a competition. Find the range and the interquartile range of the points.

Range: 15; IQR: 13

Range: 15; IQR: 12

Range: 15; IQR: 11

Range: 15; IQR: 10

10.

Multiple Choice

5 mins

1 pt

Calculate the interquartile range of the following data: 17, 18, 18, 19, 20, 21, 21, 23, 25

3

8

4

5

11.

Multiple Choice

5 mins

1 pt

11. Find the Median of the following numbers:

84, 88, 72, 74, 98, 16, 94

16

98

84

There is no median

12.

Multiple Choice

5 mins

1 pt

What is the Q1 of this data set?

6, 7, 2, 1, 5, 2, 1, 6

1

1.5

2

2.5

13.

Multiple Choice

5 mins

1 pt

What is the IQR of this data set?

37, 42, 48, 51, 52, 53, 54, 54, 55

5

6

8

9

14.

Multiple Choice

5 mins

1 pt

What is the Q3 of this data set?

37, 42, 48, 51, 52, 53, 54, 54, 55

53

53.5

54

55

15.

Multiple Choice

5 mins

1 pt

What is the Q₁ for the following data? 52, 72, 96, 21, 58, 40, 75

40

75

58

35

16.

Multiple Choice

5 mins

1 pt

What is the Q₃ for the following data? 52, 72, 96, 21, 58, 40, 75

58

75

40

35

17.

Multiple Choice

5 mins

1 pt

How do you find the range of a set of numbers?

Subtract the largest number from the smallest number

It is the number that occurs most often

Add all the numbers and divide by how many numbers there are

Subtract the smallest number from the largest number

18.

Multiple Choice

5 mins

1 pt

Quartile 1 is the...

Median

Mode

Upper Quartile

Lower Quartile

19.

Multiple Choice

5 mins

1 pt

Quartile 3 is the...

Range

IQR

Upper Quartile

Lower Quartile

20.

Multiple Choice

5 mins

1 pt

IQR stands for...

interquestion rainbow

inside quick radiation

interquartile range

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