Mean and Median

What is the mean?
4,5,6,7,3,4,10,1

• 40
• 48
• 5
• 8

Find the median:
5, 6, 3, 9, 0, 4, 1, 2, 7

• 4
• 4.1
• 5
• 4.5

What is the definition of median?

• Add the numbers together and then divide by the number in the set.

• The difference between the largest and smallest number.

• The number in the middle when the numbers are in order from least to greatest.

• The number that appears most often.

I have been running to keep stay in shape. These are the number of miles I have been running this week: 5, 4, 3, 5, 4.5, 5.5 and 2.5. What is my mean running distance?

• 3.5

• 4.75

• 4.21

• 3.71

To find the median, you need to

• Order the numbers from least to greatest, then find the number in the center.

• Just find the number in the middle.

• Multiply all of the numbers together.

• Add all of the numbers together, then divide by the total amount of numbers.

When finding the median, what do you do when there's 2 numbers in the center?

• Use the smaller number.

• Use the bigger number.

• Just pick one.

• Add them together, and find the mean.

The number of miles that Jenna cycled each week for a 7-week period is shown: 
36, 42, 28, 52, 48, 36, 31 
What is the median number of miles Jenna cycled?

• 24
• 36
• 39
• 52

It is possible to have three numbers in the middle of a data set.

• True
• False

Roger bowled 7 games last weekend. His scores are: 155, 165, 138, 172, 127, 193, 142. What is Roger's median score?

• 127
• 155
• 156
• 193

The median of the observations, arranged in ascending order is 20. Find x . observations are 3,4,7,8,10,18, x+2, x+4,26,28,31,36, 38 and 40

• 16

• 17

• 19

• 21