Mean, Median and Mode

What is the mean of the following set of numbers: 10, 15, 20, 25?

• 15

• 17.5

• 20

• 22.5

Find the median of the data set: 15, 8, 20, 5, 12.

***You must place the numbers in order

• 8

• 12

• 15

• 20

3. If the mode of a dataset is 10, what does it imply?

• 10 is the most frequently occurring number in the dataset.

• The dataset has no mode.

• 10 is the middle value in the dataset.

• The dataset is invalid.

4. Calculate the mean of the numbers: 6, 8, 10, 12, 16.

• 10

• 11

• 12

• 14

If the data set is 3, 7, 5, 7, 9, what is the mode?

• 5

• 7

• 9

• There is no mode

In a new dataset with values 5, 7, 12, and 20, if you add a value of 25, how does it affect the mean?

• The mean decreases.

• The mean remains the same.

• The mean increases.

• I'm not sure.

What happens to the median if you remove the smallest number in a dataset?

Example:

Original Data- 2, 3, 7, 7, 8, 9

New Data- 3, 7, 7, 8, 9

• The median remains the same.

• The median increases.

• The median decreases.

• It depends on the original values in the dataset.

Look at this set of numbers. How would the mode change if the number 1 were added to the set?

3, 8, 2, 5, 2, 10, 1

• There would not be a change

• There would be no mode

• There would be more than one mode

• The mode would decrease