Interpret Measures of Center and Variability

What is the mean of the data below?

• 17

• 18

• 20

• 17.5

What is upper extreme of the data below?

• 18

• 19

• 19.5

• 20

Find the mean of the following numbers 40, 38, 46, 38, 51 and 57.

• 45

• 40

• 38

• 35

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

What is the definition of the range?

• The average

• The number that occurs the most

• The middle number

• The difference of the largest and smallest numbers

What is the second step when calculating the Mean Absolute Deviation?

• Find the distance each value is from the mean

• Find the mean of the distances

• Find the mean of the data

What is the third step when calculating the Mean Absolute Deviation?

• Find the distance each value is from the mean

• Find the mean of the distances

• Find the mean of the data