Measures of Variation

How do you find the Interquartile Range?

• divide the 3rd quartile by the 1st quartile
• subtract the biggest number by the smallest number
• divide the biggest number by the smallest number
• subtract the 3rd quartile by the 1st quartile

Tags

CCSS.6.SP.A.3

CCSS.6.SP.B.5

What is the outlier in this data set?
{23, 60, 30, 21, 25, 35, 29}

• 35
• 21
• 30
• 60

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CCSS.6.SP.A.3

CCSS.6.SP.B.5

CCSS.6.SP.A.2

33, 25, 42, 25, 31, 37, 46, 29, 38
What is the third quartile of the data?

• 37
• 38
• 40
• 46

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CCSS.6.SP.A.3

CCSS.6.SP.B.5

CCSS.6.SP.A.2

33, 25, 42, 25, 31, 37, 46, 29, 38
What is the first quartile of the data?

• 25
• 27
• 29
• 33

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CCSS.6.SP.A.3

CCSS.6.SP.B.5

CCSS.6.SP.A.2

33, 25, 42, 25, 31, 37, 46, 29, 38
What is the interquartile range of the data?

• 8
• 9
• 13
• 21

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CCSS.6.SP.A.3

CCSS.6.SP.B.5

CCSS.6.SP.A.2

Roger bowled 7 games last weekend. His scores are: 155, 165, 138, 172, 127, 193, 142. What is the range of Roger's scores?

• 193
• 127
• 60
• 66

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CCSS.6.SP.A.3

CCSS.6.SP.B.5

CCSS.6.NS.C.7

Find the median.
7, 1, 1, 7, 1, 4, 1

• 4
• 7
• 1
• 5

Tags

CCSS.7.EE.B.3

Find the range.
12, 5, 9, 18, 22, 25, 5

• 20
• 15
• 22
• 18

Tags

CCSS.4.MD.B.4

Find the mean.
90, 100, 95, 85, 60, 80

• 85
• 84
• 86
• 90

Tags

CCSS.7.NS.A.3

What do you do if there are two numbers in "the middle" when you are finding the median?

• Pick your favorite number
• Add the two numbers in the middle & then divide by two.
• They are both the median
• None of the above

Tags

CCSS.6.SP.A.3

CCSS.6.SP.B.5

CCSS.6.SP.A.2