Measures of Center

What is the mean of this set of data?

2, 15, 7

• 24

• 3

• 6

• 8

Find the median of these numbers:
2, 3, 4, 5, 5, 7

• 4
• 5
• 4.5
• 6

A data set can have more than one median?

• True
• False

A data set can have more than one mode

• True
• False

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

• 2

• The minimum

• The maximum

• The number of items

What is the range?

• average
• biggest-smallest
• the middle #
• # happening the most

What is the mode?

• # happening the most
• the average
• biggest - smallest
• the middle #

Find the range.
5, 15, 10, 20, 15, 10, 15

• 5
• 10
• 15
• 13

How do you find the median of a data set that has two middle numbers?

• You pick the higher middle number

• You pick the lower middle number

• Add the two middle numbers and divide it by 2

• Subtract the two middle numbers and divide by 2

The mean of this data set is 17.8. What would happen to the mean if 40 was added to the data set?

• The mean would not change

• The mean would go up

• The mean would go down