Finding the Mean of Data

Find the average of these numbers:

5, 11, 2, 12, 4, 2

• 36

• 6

• 2

• 4

How do you find the mean/average?

• Found by identifying the data that is your favorite.

• Found be identifying the number in the middle of the data.

• Found by subtracting the smallest from the largest.

• Found by adding all of the data and dividing by how many there are.

Find the average of the following data...

5, 3, 6, 5, 3, 9, 4

• 8

• 5

• 6

• 7

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

Dr. Phipps is a dentist. She needs to report on the average number of cavities that her patients have. They were: 1,1,5,6,7 ..whats the average?

• 20

• 4

• 1

• 5

Hannah has scored the following number of points in the last five games: 2, 57, 38, 42, 6. What is her average over those games?

• 29

• 38

• 50

• 145

Daniel has hit the following number of homeruns over the last 5 years: 25, 21, 36, 19, and 29. What is his average number of homeruns per year?

• 130

• 21

• 26

• 36

Jeff has four grades in Science. If his scores are 100, 96, 96, and 100, what is his average?

• 96

• 97

• 98

• 100

What is the first step for finding the mean of data?

• Divide by the number of data items.

• Count the number of data items.

• Add up all of the data items.

What is the second step for finding the mean of a data set?

• Divide by the number of data items.

• Add up all of the data items.

• Put data in order from least to greatest.