Mean Median and Mode

Another name for the "mean"

• Middle number
• Average
• Number that repeats the most
• Rude

What is the mean of the data set:
8.9, 9.4, 8.6, 9.1

• 8.5
• 8.9
• 9
• 9.1

What is the first thing you should do before finding the median or the mode?

• Start crossing numbers off
• Put numbers in order from least to greatest
• List the numbers how they are
• Look for repeats

What is the mode of the data set:
Black  Blue  Red
Pink  Black  Black
Gray  Green  Blue
Blue  Blue  Red
Yellow  Blue  Red

• Blue and Black
• Blue
• Red
• Black

How do you find the average of a data set?

• Add them all up and divide by how many numbers there are
• List in order from least to greatest
• Add the numbers and subtract the largest number
• Find the repeated numbers

Find the median of the data set:
18, 19, 17, 14, 20, 20, 15, 21

• 17
• 18.5
• 20
• 14

Find the mean of the data set:
34, 57, 58, 56, 21

• 45.2
• 56
• none
• 48

Find the mean of the following data set.

15 , 18 , 16 , 20 , 14 , 12 , 8 , 25

Find the average of the following data set:

8 , 7 , 6 , 9 , 8 , 7 , 6 , 3 , 9

Find the mode of this set of numbers:
10, 10, 7, 12, 11

• 11
• 12
• 7
• 10