Algebra-Standard deviation and z-score 2

All of the below sets have the same mean.
Set 1-Standard Deviation=2.7
Set 2-Standard Deviation=9.1
Set 3-Standard Deviation=0
Set 4-Standard Deviation=3.2
Which set of data probably has the points closest to the mean?

• Set 1
• Set 2
• Set 3
• Set 4

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 most variance?
A          5
 B           3.2
C             0
D            4.1

• A
• B
• C
• D

The standard deviation and mean are shown for 2 data sets  Which is true about the data points?
SET 1       σ=4.8    μ=11
 SET 2       σ=4.7    μ=10

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

Which of the following is a measure of variability?

• mean
• median
• mode
• standard deviation

Tags

CCSS.HSS.ID.A.2

CCSS.HSS.ID.A.3

CCSS.HSS.ID.A.4

The standard deviation for 4 data sets are shown.  Which has all of the data points the same as the mean?
A          1
 B           9
C             0
D            5.2

• A
• B
• C
• D

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

• 6.89
• 47.47
• 10.1
• 102.01

How many values have a z-score less than 1?
12, 15, 11, 14, 19

• 1
• 2
• 3
• 4