Standard Deviation and Variance

Which data set has the largest standard deviation?

• Set 1

• Set 2

• Set 3

• Set 4

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

• 2

• 16

• 4

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

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

What does this symbol represent?

• Standard Deviation

• Variance

• Mean Absolute Deviation

• Sigma

What is the standard deviation on this Normal Curve?

• 6

• 12

• 34

• 18

List each set of data by color from the lowest standard deviation to the highest standard deviation.

• blue, green, pink, red

• red, pink, green, blue

• pink, green, red, blue

• blue, green, red, pink

What does this symbol represent?

• Standard Deviation

• Variance

• Mean Absolute Deviation

• Sigma

Match the following

• It is every member of the group we are studying or analyzing

• Outlier

• It is a smaller group that we study to predict how the entire group will respond

• Population

• It is a value that falls significantly far away from the majority of our data

• Variability

• It is a word that describes how widely spread our data is

• Standard Deviation

• The average distance of a data point to the mean

• Sample

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