Measures of Central Tendency and Variation Review

What do you do if there are two numbers in "the middle" when you are finding the median?

• Pick your favorite number

• Add the two numbers in the middle & then divide by two.

• They are both the median

• None of the above

What measure of central tendency (mean, median or mode) would be best for the following set of data?

• Mode, because it is the one that shows up the most.

• Median, because there is an outlier. The outlier would influence the mean too much.

• Mean, because you should always use the mean.

• There is not a best measure of central tendency for this data.

A data set can have more than one _______

• Median

• Mode

• Mean

• Midrange

What is the mode?

• 4

• 9

• 6

• 5

Which is the MIDDLE of an ordered set of data?

• Mean

• Median

• Mode

• Range

Which is a synonym for "average?"

• mean

• median

• mode

• range

If you score 76, 85, 97, and 83 on your math tests, what would your median score be? 

• 84

• 90

• 85

• 88

Find the mean of these numbers:
5, 11, 2, 12, 4, 2

• 4.1

• 6

• 4.5

• 4

• spread

• mean

• outlier

• median

The table shows the number of people with the corresponding number of friends on Facebook.  What is the median? 

• 49.6

• 50

• 51

• 50.3