Standard Deviation

Standard Deviation

11th Grade

20 Qs

quiz-placeholder

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Standard Deviation

Standard Deviation

Assessment

Quiz

Mathematics

11th Grade

Practice Problem

Hard

Created by

Anthony Clark

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20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which of the following is a measure of variability?

mean

median

mode

standard deviation

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

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

511.33

22.61

438.48

20.94

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the variance for the data given:
5, 10, 7, 12, 0, 20, 15, 22, 8, 2

47.47

102.01

52.77

81

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

If the standard deviation of a data set is 4, what is the variance?

2

16

4

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

What is the standard deviation on this Normal Curve?

6

12

34

18

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Data on the weights of various dog breeds is shown. Which of the following BEST describes what would happen to the standard deviation if the average weight of a St. Bernard, which weighs around 160 pounds, was added to the list?

The Standard Deviation will increase.

The Standard Deviation will decrease.

The Standard Deviation will be unchanged.

The Standard Deviation will be impossible to calculate.

Answer explanation

Remember, the standard deviation describes how spread out the numbers are. If a data value is added to the data set that widens the range of the data, it will always increase the standard deviation.

This is true even if a value that is LOWER than all the data is added. The standard deviation will still increase, because the range of the data is widened.

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Which curve has the greater standard deviation?

Red

Black

Blue

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