Mean Mode and Median

What is the definition of the mean?

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

• The middle number after the numbers have been put in order from least to greatest.

• The difference between the highest and lowest numbers

• The number that occurs the most often.

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

At Donald's Donuts the number of donut holes in a bag can vary. Help Donald find the mode.

12,10,10,10,13,12,11,13,10

• 10

• 11

• 12

• 13

Which number is NOT the mean, median, or mode of this data set?

• 7

• 6

• 3

• 5

Ms. Andrey claims the average score on a quiz in her class was 25. Mr. Luna claims the average score on a quiz in his class is 25.

• Ms. Andrey used the mode, while Mr. Luna used the median.

• Ms. Andrey used the mean, while Mr. Luna used the mode.

• Both teachers used the mean.

• Both teachers used the median.

Below is a table of the points Jeff scored in his basketball games. State which of these measures of central tendency best represents Jeff’s points scored. Justify your answer.

• mean

• median

• mode

Which measure of central tendency is most likely to be the same as the mean in a perfectly symmetrical bell-shaped distribution?

• Median

• Mode

• Both A and B

• None of the above

What is the mean of the following numbers: 3, 3, 6, 6, 6, 9, 9?

• 6

• 6.5

• 7

• 7.5

What is the mean of these numbers: 55, 60, 65, 70, 75?

• 60

• 65

• 70

• 75

If a dataset contains the numbers 100, 200, 300, 400, and 5000, which measure of central tendency is most affected by the outlier?

• Mean

• Median

• Mode

• All of the above