Measures of variation

If a number is added to the set that is in the middle of the data, how does this affect the range?

• increase
• decrease
• stay the same
• both increase and decrease

If a number is added to a set that is far away from the mean, how does this affect standard deviation?

• increase
• decrease
• stay the same
• both increase and decrease

Which of the following is a measure of variability?

• mean
• median
• mode
• standard deviation

Tags

CCSS.6.SP.A.3

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.6.SP.A.3

CCSS.6.SP.A.2

CCSS.6.SP.B.5

What does this symbol represent?

• Mean
• Median
• Mode 
• Standard Deviation

What does this symbol represent?

• Standard Deviation
• Variance
• Mean Absolute Deviation
• Sigma

What does this symbol represent?

• The number of elements in a data set
• None of your business
• A variable
• One specific element

Tags

CCSS.6.EE.B.6

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

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