Comparing Populations with Data Analysis

What is the mean of the following data set: 4, 8, 12, 16, 20?

• 10

• 12

• 14

• 16

What is the median of the following data set: 3, 7, 9, 15, 18?

• 7

• 9

• 12

• 15

If the range of a data set is 20, and the smallest number is 5, what is the largest number?

• 15

• 20

• 25

• 30

What does the interquartile range (IQR) measure in a data set?

• The range of the entire data set

• The middle 50% of the data

• The difference between the mean and median

• The average of the data set

Which of the following is an outlier in the data set: 3, 4, 5, 6, 14?

• 3

• 4

• 6

• 14

How do you calculate the range of a data set?

• Subtract the smallest number from the largest number

• Add the smallest and largest numbers together

• Divide the sum of all numbers by the total number of numbers

• Multiply the smallest number by the largest number

What is the median of the following data set: 2, 4, 6, 8, 10, 12?

• 6

• 7

• 8

• There is no median for this data set

If a data set has a large range, what does it indicate about the spread of the data?

• The data points are very close to each other

• The data points are spread out over a small range

• The data points are spread out over a large range

• The data points are all the same

How can box plots be used to compare distributions?

• By comparing the means of the distributions

• By comparing the ranges and interquartile ranges of the distributions

• By comparing the total number of data points in each distribution

• By comparing the maximum values of each distribution

What is the mean of the following data set: 5, 10, 15, 20, 25?

• 10

• 15

• 20

• 25