Calculate Variance and Standard Deviation

Order the dot plots from least to greatest standard deviation.

• A, D, C, B

• B, C, D, A

• A, D, B, C

• B, C, A, D

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

• 6.89

• 10.1

• 7.26

• 9

Given a variance of 64, what is the standard deviation?

• 8

• 4096

• 0

• 6.8

What is the standard deviation for the data given:
{12, 13, 29, 18, 61, 35, 21}

• 293.67

• 15.87

• 17.14

• 41.98

Now, calculate the standard deviation.

• 12.1

• 21170.25

• 600.25

• 4.9

After subtracting the mean from each value in the data set, the next step is to find the sum of those differences.

• True, then square that sum.

• False. Square the differences, then find the sum.

Calculate the sum of the square of the difference.

(That is, steps 2, 3, and 4 ... Σ(x - μ)²

• 145.5

• 150

• 12

What is the standard deviation for the data given:

{12, 13, 29, 18, 61, 35, 21}

• 293.67

• 15.87

• 17.14

• 41.98

Find the varians

• 34.0

• 33.0

• 34.5

• 35.5

It is defined as the square root of the variance.

• coefficient of variation

• midrange

• standard deviation

• kurtosis