7.2 Measures of Dispersion

Find the interquartile range from the graph.

• 17

• 8

• 9

• 45

Calculate the estimated mean for the data.

• 16.82

• 16.89

• 16.85

• 16.84

Calculate the range of the following data.

• 200

• 150

• 300

• 350

Based on the given mean, calculate the variance for the data.

• 4.18

• 4.19

• 4.20

• 4.21

Calculate the standard deviation for the data.

• 2.10

• 2.50

• 2.05

• 2.01

Identify the distribution of the data.

• Right-skewed

• Left-skewed

• Symmetric

Identify the distribution for the yellow box plot.

• Symmetric

• Right-skewed

• Left-skewed

Calculate the variance.

• 0.415

• 0.400

• 0.385

• 0.360

What is the interquartile range?

• 31

• 20

• 40

• 16

Which restaurant has a higher median wait time?

• They are the same

• Lucy's Steakhouse

• Gary's Grill