Data With Variability

What is the variability of ages in the graph?

• 20 - 14 = 6

• 20 - 12 = 8

Which Class has less variability?

• Class A, because 22 - 2 = 20

• Class B, because 22 - 10 = 12

What is data with variability?

• Data or numbers that are different

• Data or numbers that are all the same

Which question would yield data without variability?

• How many visitors to the park are there in ONE year?

• How many visitors to the park are there in EVERY year?

What is the difference between the highest and lowest temperature?

• 65 - 63 = 2

• 80 - 76 = 4

• 80 - 63 = 17

• 80 - 72 = 8

The MAD (mean absolute deviation) score was calculated for 4 different sets of data. Which MAD score below would represent the set of data with the highest variability?

• MAD: 4.67

• MAD: 2.32

• MAD: 1.68

• MAD: 5.23

Select ALL the statements that are TRUE about the dot plot.

• It is best to use the mean to describe the center of the data.

• It is best to use the median to describe the center of the data.

• The shape of the data could be described as "bimodal"

• The shape of the data could be described as "skewed"

• The shape of the data could be described as "symmetrical"

How many fish could have been exactly 9 inches?

• 5

• 9

• 6

• 14

• 1

Find the MAD (mean absolute deviation) for the following data set.

1, 5, 7, 9, 10, 11, 13, 15, 19

What is the median shown by the data in the graph?

• 4

• 4.5

• 5

• 3

• 3.5