Choosing Mean or Median

The number found when you find the sum of a set of numbers and divide by the number of items is the

We find the mean by...

• subtracting everything

• adding all numbers together and dividing by the number of numbers

• a number somewhere is the middle

• looking at the data

We find the median by...

• adding all the numbers

• looking at the data

• ordering our numbers from least to greatest and choosing the number in the middle

• subtracting everything

Find the median: 3, 2, 6, 4, 5

Answer explanation

2, 3, 4, 5, 6

2, 3, 4, 5, 6

Find the mean: 3, 2, 1

Answer explanation

3+2+1=6

6/3=2

Find the median: 18, 15, 15, 16, 14, 11

Answer explanation

11, 14, 15, 15, 16, 18

11, 14, 15, 15, 16, 18

What is the definition of the median?

• The one that takes the longest

• The one we see the most

• The medium number, or the one we find in the middle

• The answer to a subtraction problem

The mean of a data set can be found by...

• subtracting the minimum from the maximum

• choosing the middle number

• choosing the number that occurs most

• finding the sum of the numbers and then dividing by the total amount of numbers in the data set

The median of the numbers 14, 31, 1, 5, and 26 is...

• 14

• 15.4

• 30

• None

Find the mean of these numbers:

5, 11, 2, 12, 4, 2

• 2

• 6

• 4.5

• 5