Finding the Mean (Average)

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

• Add all of the numbers up and then divide by the amount of numbers you have

• Do the largest number minus the smallest number

• Find the middle number

• Find the number that occurs most often

Another name for Mean is...

• Median

• Average

• Mode

How many data items are in the set below?

2, 8, 4, 3, 5, 2

• 24 data items

• 6 data items

• 4 data items

Find the mean of 
9, 11, 2, 6

• 4
• 5
• 6
• 7

2. Find the mean of the numbers.
1, 1, 2, 2, 9

• 7
• 1
• 3
• 5

Find the mean of 
9, 11, 2, 6

• 4
• 5
• 6
• 7

Find the mean:

7, 7, 15, 17, 4, 20

• 10

• 6

• 16

• 60

Find the Mean of the following data:

2, 8, 4, 3, 5, 2

• The mean is 8.

• The mean is 24.

• The mean is 6.

• The mean is 4.

What is the definition of the mean?

• The average
• The middle number
• The difference between the highest and lowest numbers
• The number that occurs the most

Calculate the mean of 9, 3, 6

• 6

• 7

• 8

• 9