MEASURES OF VARIABILITY

The difference between the highest and the lowest score is _______________________________.

• range

• standard deviation

• variance

• average deviation

What is the range?

• 6

• 2 - 8

• 3

• 4

Tags

CCSS.6.SP.A.3

CCSS.6.SP.B.5

How do you find the range of a set of numbers?

• Subtract the largest number from the smallest number

• It is the number that occurs most often

• Add all the numbers and divide by how many numbers there are

• Subtract the smallest number from the largest number

Tags

CCSS.6.SP.A.2

CCSS.6.SP.A.3

CCSS.6.SP.B.5

Find the Mean Absolute Deviation:  5, 11, 2, 7, 16.  The Mean is 8.2 

• 3.2
• 2.8
• 1.2
• 4.2

Tags

CCSS.6.SP.A.2

CCSS.6.SP.A.3

CCSS.6.SP.B.5

Which mean absolute deviation would have a greater variability or spread?  4.2 or 8.5?

• 4.2
• 8.5

Tags

CCSS.6.SP.B.5C

What is the first step when calculating the Mean Absolute Deviation?

• Find the distance each value is from the mean
• Find the mean of the distances
• Find the mean of the data

Tags

CCSS.6.NS.C.7

CCSS.6.SP.A.3

CCSS.6.SP.B.5

Find the Standard Deviation

{ 12, 15, 16, 12,}

• 4

• 4.09

• 5.6

• 3.6

Tags

CCSS.HSS.ID.A.2

CCSS.HSS.ID.A.4

Roger bowled 7 games last weekend. His scores are: 155, 165, 138, 172, 127, 193, 142. What is the range of Roger's scores?

• 193
• 127
• 60
• 66

Tags

CCSS.7.NS.A.1C

It is a measure of variability that you get when you subtract the smallest number in a set of data from the largest number.

• mean

• median

• mode

• range

Tags

CCSS.6.SP.A.3

Given the table, find the Mean Deviation.

• 4

• 3

• 2

• 5

Tags

CCSS.6.SP.B.5C