Standard Deviation

What does this symbol represent?

• Standard Deviation
• Variance
• Mean Absolute Deviation
• Sigma

What is the mean?

• # happening the most
• the number in the middle
• biggest-smallest
• the average

Tags

CCSS.8.EE.C.7B

Find the mean of these numbers:
5,11,2,12,4,2

• 4.1
• 6
• 4.5
• 4

What is the population standard deviation for the data given:

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

• 293.67

• 15.87

• 17.14

• 41.98

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 does this symbol represent? $\overline{x}$  

• standard deviation
  

• median

• mode

• mean