Measure of Center Mean

What is the mean of this data?

• 24

• 5

• 6

• 4

What is the mean of this data?

• 3.5

• 4.2

• 6

• 3

What is the mean of this data?

• 6

• 4.8

• 43

• 3.9

• 136

• 150

• 156

• 153

Paulo got these grades in three tests: 72, 80 and 82. He had one more test to take. He wanted an average of 80 for the four tests. What mark must he get in the fourth test? (This is a hard one) Hint: Multiply 80 x 4 Add the three grades he has already Subtract answers one and two.

• 80

• 234

• It is not possible for him to get an 80 average

• 86

Dr. Dre is a dentist. He needs to report on the average number of cavities that his patients have.
1,0,1,5,6,3,4

• 3.33

• 2.85

• 3

• 3.5

The mean is found by ___________________ all of the numbers and then _____________________ by the number of items.

• adding, subtracting

• adding, multiplying

• dividing, adding

• adding, dividing

To find the average of a set of numbers, add up all the items and divide by...

• 2

• The minimum

• The maximum

• The number of items

If you have two numbers in the middle, you should

• add them together and divide by two

• find the number in between the two

• find the mean of the two numbers

• all of these

Paulo got these grades in three tests: 72, 80 and 82. He had one more test to take. He wanted an average of 80 for the four tests. What mark must he get in the fourth test?

• 80

• 234

• It is not possible for him to get an 80 average

• 86