Population and Statistics Review

What is the range of the follow set of data:

• 67

• 43

• 68

• 56

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

• Find the middle number

• The number that appears the most

• Add all the numbers up and divide them by the total amount of numbers

• The highest value minus the lowest value

Determine the mean absolute deviation of the data. 9, 7, 11, 10, and 8

• 9

• 6

• 1.2

• 5

Find the Mean Absolute Deviation:  10, 9, 3, 8, 10.  The Mean is 8

• 3

• 5

• 1

• 2

What is another word for average?

• Mean

• Median

• Mode

• Range

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

• 3.2

• 2.8

• 1.2

• 4.2

Find the MAD:
2,4,6,8,10,12

• 5

• 7

• 1

• 3

Entire group you want to know something about

• mean

• population

• sample

• biased

A subset of the population

• population

• sample

• IQR

• biased

Each member of the population has an equal chance to be picked

• sample

• biased

• random

• representative