The Mean and standard deviation

Find the mean:

2, 4, 6, 8, 10, 12

• 42

• 7

• 10

• 6

Tags

CCSS.HSS.ID.A.2

CCSS.HSS.MD.A.2

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

Tags

CCSS.6.SP.A.3

CCSS.6.SP.B.5

Find the standard deviation of the following

2, 5, 5, 8, 11, 12

to 3 s.f.

(a)  

Find the standard deviation of the following

2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2

(a)  

Tags

CCSS.HSS.ID.A.2

Find the standard deviation of the following

7, 8, 10, 10, 11, 12, 13, 14, 14, 14

to 3 s.f.

(a)  

Find the standard deviation of the following

13, 26, 29, 41, 56, 57, 71

to 3 s.f.

(a)  

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

Tags

CCSS.HSS.ID.A.2

CCSS.HSS.ID.A.3

CCSS.HSS.ID.A.4

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

Tags

CCSS.HSS.ID.A.2

CCSS.HSS.ID.A.3

What does this symbol represent?

• Standard Deviation

• Variance

• Mean Absolute Deviation

• Median

Tags

CCSS.HSS.ID.A.2

CCSS.HSS.ID.A.3

CCSS.HSS.ID.A.4