Mean Median and Mode Review

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

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

• 45.2

• 56

• none

• 48

If my data set had an outlier that was quite a bit more than the other numbers in my data set, what would it do to my average

• leave it the same

• increase the average

• decrease the average

Find the mean of this set of numbers:
19, 19, 9, 11, 13, 20, 19, 10

• 19

• 15

• 20

• 13

Find the median of this set of numbers:
7, 6, 19, 12, 16, 19, 19, 6

• 16

• 14

• 15

• 6

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

• 4

• 4.1

• 5

• 4.5

Can there be more than one mode?

• Yes

• No

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

What is the MODE of this set?

• 3

• 5

• 12

• 6

How do you find the MEAN of this set?

• Look for the middle number

• Add all the numbers for a total, then divide by 6.

• Take the biggest value and subtract the smallest value.

• It's the number that occurs most often in the set,

  so 6.