Range & IQR
2 years ago
agnewj
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• Question 1
120 seconds
Q.

Find the range of the data.

63, 71, 65, 66, 87, 53

32

33

34

35

• Question 2
30 seconds
Q.

Find the range of the data.

16, 28, 6, 19, 21, 15, 22, 33, 17

18

27

30

12

• Question 3
300 seconds
Q.

Find the median, first quartile, third quartile, and interquartile range of the data.

32, 53, 72, 66, 47, 54, 49, 67, 71

Median: 54

First Quartile: 49

Third Quartile: 67

IQR: 18

Median: 54

First Quartile: 48

Third Quartile: 69

IQR: 21

Median: 54

First Quartile: 48

Third Quartile: 69

IQR: 22

Median: 54

First Quartile: 49

Third Quartile: 69

IQR: 20

• Question 4
300 seconds
Q.

Find the median, first quartile, third quartile, and interquartile range of the data.

203, 183, 212, 181, 157, 204, 189, 190

Median: 189

First Quartile: 182

Third Quartile: 203

IQR: 21

Median: 189.5

First Quartile: 182

Third Quartile: 203

IQR: 21

Median: 189

First Quartile: 182

Third Quartile: 203.5

IQR: 21.5

Median: 189.5

First Quartile: 182

Third Quartile: 203.5

IQR: 21.5

• Question 5
300 seconds
Q.

Find the median, first quartile, third quartile, and interquartile range of the data.

23, 33, 25, 16, 27, 43, 29, 40, 35

Median: 29

First Quartile: 24

Third Quartile: 37.5

IQR: 13.5

Median: 27

First Quartile: 25

Third Quartile: 35

IQR: 10

Median: 29

First Quartile: 25

Third Quartile: 37.5

IQR: 12.5

Median: 27

First Quartile: 24

Third Quartile: 35

IQR: 11

• Question 6
300 seconds
Q.

What are the correct expressions for using the IQR to determine if there is an outlier that is a lot less and a lot greater than the other values. Hint: Choose 2 expressions.

Q1 - 1.5(IQR)

Q3 - 1.5(IQR)

Q1 + 1.5(IQR)

Q3 + 1.5(IQR)

• Question 7
300 seconds
Q.

Use the interquartile range to identify any outliers in the following data.

23, 22, 25, 16, 27, 43, 29, 40, 35

No outliers.

43 is an outlier.

• Question 8
300 seconds
Q.

Use the interquartile range to identify any outliers in the following data.

52, 63, 55, 56, 62, 54, 59, 60, 53, 61, 88

No outliers.

88 is an outlier.

• Question 9
300 seconds
Q.

Use the interquartile range to identify any outliers in the following data.

32, 53, 72, 66, 47, 54, 49, 67, 71

No outliers.

32 is an outlier.

• Question 10
300 seconds
Q.

The table shows the ages of automobiles in the parking lot. The range of the ages is 12 years. Find the missing age.

12

13

14

15

• Question 11
300 seconds
Q.

The table shows the swim times for the swimmers in the final heat. Find and interpret the interquartile range of the swim times.

The middle quarter of the swim times vary by no more than 1 second.

The middle half of the swim times vary by no more than 1 second.

The middle quarter of the swim times vary by no more than 1.2 seconds.

The middle half of the swim times vary by no more than 1.2 seconds.

• Question 12
300 seconds
Q.

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

Range: 15

IQR: 10

Range: 15

IQR: 11

Range: 15

IQR: 12

Range: 15

IQR: 13

• Question 13
30 seconds
Q.

The table shows the number of minutes sixth-graders spend reading each night. What percent of the students read less than 19 minutes?

25%

50%

75%

100%

• Question 14
30 seconds
Q.

The table shows the number of minutes sixth-graders spend reading each night. What percent of the students read more than 25 minutes?