AnswersEAP-Algebra Functions and Data Analysis B CRStandard Deviation

Standard Deviation Answers

16 verified answers
1
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Fill in the missing values in the formula. What is the variance?

A
0
B
3.217
C
3.522
D
12.405
E
148.86
2
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What does the numerator evaluate to?

Answer:

94

3

What does the denominator evaluate to?

Answer:

5

4

The variance equals:

Answer:

18.8

5

Standard deviation:

Question illustration
A
2.08
B
4.34
C
9.4
D
18.8
E
353.44
6

Which formula should you use for variance?

Answer:

A

7

Which formula should you use for standard deviation?

Answer:

B

8

The mean of the data is 18.25.Find the variance.

A
2.12
B
3.93
C
4.5
9

Find the standard deviation.

A
1.98
B
2.12
C
2.25
D
20.25
10

;

Answer:

11.7;

11

x = μ =

Answer:

7

12

z11.7 ≈

A
-1.3
B
0.4
C
1.3
D
3.3
13

Is 11.7 within a z-score of 3?

A
Yes because z < 3.
Option A
B
Yes because z = 3.
Option B
C
No because z > 3.
Option C
14

Which statement is true of z?

Question illustration
A
z is between 0 and 1 standard deviations of the mean.
Option A
B
z is between 1 and 2 standard deviations of the mean.
Option B
C
z is between 2 and 3 standard deviations of the mean.
Option C
15

Which equation can you use to calculate the missing credit score?

A
Option
Option A
B
Option
Option B
C
Option
Option C
16

The missing credit score was .

A
752
B
808
C
810

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