Comparing Measures of Center and Variability

What is the mean of the data below?

• 17

• 18

• 20

• 17.5

Which of the following is NOT a Measure of Center?

• mean

• median

• mode

• range

What is an outlier?

• A value that repeats more than the other values

• The middle value when the numbers are in order least to greatest

• A value that is much less or much greater than the rest of the data

• The difference between the greatest value and the least value in a data set

• The mean is one point lower than the median

• The mean is four points lower than the median

• The mean is one point higher than the median

• The mean is four points higher than the median

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

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

Find the median:
3, 5, 7, 4, 3, 1

• 3 and 4

• There isn't one

• 3.5

• 3

Calculate the Mean Absolute Deviation 7, 9, 2, 7, 3, 5, 10

• 2.41

• 2

• 4.21

• 3

Find the MAD:
58, 38, 54, 48, 26, 36

• 43

• 20

• 10

• 12

What is the median?

• 62

• 58

• 66

• 60