Unit 7a Remediation - Normal Distributions

Out of 28 data, what proportion falls in the interval 20 - 24?

• 10 / 28 = 0.357

• 13 / 28 = 0.46

• 20 / 24 = 0.833

• 13 / 50 = 0.26

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Out of 28 data, what proportion falls in the interval 16 - 20?

• 9 / 28 = 0.32

• 15 / 28 = 0.54

• 16 / 20 = 0.2

• 9 / 50 = 0.18

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CCSS.6.SP.B.4

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Out of 28 data, what proportion falls in the interval 26 - 28.

• 2 / 28 = 0.07

• 3 / 28 = 0.107

• 26 / 28 = 0.93

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CCSS.6.SP.B.4

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Select ALL distribution shapes which describe a Normal Distribution.

• Skewed

• Uniform

• Approximately Symmetric

• Bell-Shaped

• Bimodal

What is the total area under a normal distribution curve?

• 1

• 50

• 22

• 3.14

A normal distribution has a mean of 85 and a standard deviation of 7.

68% of the data is between what 2 numbers?

• 78 & 92

• 7 & 85

• 78 & 85

• 85 & 99

• 85 & 92

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CCSS.HSS.ID.A.4

A normal distribution has a mean of 85 and a standard deviation of 7.

95% of the data is between what 2 numbers?

• 78 & 99

• 7 & 85

• 71 & 85

• 71 & 99

• 78 & 92

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CCSS.HSS.ID.A.4

A normal distribution has a mean of 85 and a standard deviation of 7.

What percent of the data is more than 78?

• 68%

• 95%

• 84%

• 16%

• 47.5

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CCSS.HSS.ID.A.4

A normal distribution has a mean of 85 and a standard deviation of 7.

What percent of the data is between 78 & 99?

• 68%

• 95%

• 84%

• 81.5%

• 97.5%

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CCSS.HSS.ID.A.4

Here is a histogram with a distribution size of 22.

What proportion of data points fall in the interval 1-3?

• 2

• 2 / 22 = 0.09

• 2/ 50 = 0.5

• 0.2

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CCSS.6.SP.B.4

CCSS.HSS.ID.A.1