12.2 Stats

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

To find the mean (average) of a set of data, add up all the data points and divide by...

• 2

• The minimum

• The maximum

• The number of items

1. Find the average (mean) of these numbers.
10, 3, 2, 5

• 5
• 4
• 10
• 3

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

What is the median?

• biggest- smallest
• average
• the middle #
• # that happens the most

In order to find the median, the data must be sorted from least to greatest first.

• True
• False

When finding the median, what do you do if there are two middle numbers?

• Add them together and divide by 2
• Write them both as the answer
• Give up
• Pick one

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

• 2
• 5
• 7
• 4

Find the median.
12, 5, 9, 18, 22, 25, 5

• 9
• 8
• 12
• 18

Find the median from the list of numbers:

60, 58, 52, 48, 60, 67

• 58

• 59

• 60

• 118