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Empirical Rule and Normal Distribution

Authored by Mark Krans

Mathematics

12th Grade

CCSS covered

Used 2+ times

Empirical Rule and Normal Distribution
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9 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the average distrance from the mean of a normal distribution called?

standard deviation

variance

median

mean

Tags

CCSS.HSS.ID.A.4

CCSS.HSS.ID.A.2

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What percentage of data falls within one standard deviation of the mean in a normal distribution?

68%

50%

75%

90%

Tags

CCSS.HSS.ID.A.4

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

According to the 68-95-99.7 rule, what percentage of data falls within two standard deviations of the mean in a normal distribution?

95%

90%

99.7%

68%

Tags

CCSS.HSS.ID.A.4

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the formula to calculate the z-score?

(x - μ) / σ

(x - μ) * σ

(x + μ) * σ

(x + μ) / σ

Tags

CCSS.HSS.ID.A.4

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does a positive z-score indicate?

Below the mean

Equal to the mean

Negative z-score

Above the mean

Tags

CCSS.HSS.ID.A.4

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does a negative z-score indicate?

Below the mean

Equal to the mean

Above the mean

Greater than the mean

Tags

CCSS.HSS.ID.A.4

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the area under the curve of a probability density function (PDF) equal to?

0

2

10

1

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