Standard Deviation

• Set 3, Set 1, Set 2
• Set 3, Set 2, Set 1
• Set 2, Set 3, Set 1
• Set 1, Set 3, Set 2

All of the below sets have the same mean.
Set 1-Standard Deviation=3.1
Set 2-Standard Deviation=4.9
Set 3-Standard Deviation=1.7
Set 4-Standard Deviation=3.2
Which set of data probably has the points closest to the mean?

• 1
• 2
• 3
• 4

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

• 6.89
• 10.1
• 7.26
• 9

What does this symbol represent?

• Mean
• Median
• Mode 
• Standard Deviation

What does this symbol represent?

• Variance
• Standard Deviation
• Mean Absolute Deviation
• Sigma

What does this symbol represent?

• Standard Deviation
• Variance
• Mean Absolute Deviation
• Sigma

The standard deviation for 4 data sets are shown.  Which has the largest variance?
A          4.3
B           2.7
C             0
D            6

• A
• B
• C
• D

The standard deviation for 4 data sets are shown.  Which set has all data points being the same as its mean?
A          4.3
B           2.7
C             0
D            6

• A
• B
• C
• D

The standard deviation and mean for 2 data sets are given. 
 SET 1       σ=4.3   μ=12
 SET 2       σ=2.7    μ=16                                                 Which of the following is true about the data points?

• Set 1 has a higher variance
• Set 2 has a higher variance
• Set 1 has a lower standard deviation because the mean is lower.
• Set 2 has a higher standard deviation because the mean is higher.