Outliers 3 - Box Plots and outliers

Which of these is a correctly drawn box pot?

• Blue

• Green

• Red

• All of the above

The box plots gives information about the time, in hours, taken by a random sample of male and female runners to complete a marathon.

What is the median time for the male runners?

• 4.2 hours

• 4.1 hours

• 5 hours

• 3.4 hours

The box plots gives information about the time, in hours, taken by a random sample of male and female runners to complete a marathon.

One of the box plots has an outlier. What is the value of that outlier?

• 8.9 hours

• 9 hours

• 7.4 hours

• 6.2 hours

The box plots gives information about the time, in hours, taken by a random sample of male and female runners to complete a marathon.

Which is the most suitable measure of average to summarise the time for the male runners?

• The median

• The mean

• The mode

• The range

The box plots gives information about the time, in hours, taken by a random sample of male and female runners to complete a marathon.

Which is the most suitable measure of average to summarise the time for the female runners?

• The median

• The mean

• The mode

• The range

The numbers of games won by 12 teams in the national league is below:

11, 5, 6, 6, 9, 10, 19, 14, 11, 9, 9, and 6

Are there any outliers?

• Yes, 5 is an outlier

• Yes, 19 is an outlier

• Yes, 5 and 19 are outliers

• No

The numbers of games won by 12 teams in the national league is below:

11, 5, 6, 6, 9, 10, 19, 14, 11, 9, 9, and 6

There are no outliers. What is the most suitable measure of average to represent the data?

• The mean

• The median

• The mode

• The range

Find all possible outliers for the following set of 15 data items:

108, 31, 75, 87, 79, 88, 89, 118, 51, 89, 174, 95, 51, 70, and 73.

• 31

• 174

• 31 and 174

• There are no outliers

What is the most suitable measure of average to represent the set of data from Q8?:

108, 31, 75, 87, 79, 88, 89, 118, 51, 89, 174, 95, 51, 70, and 73.

(You will need to have Q8 correct to answer this!)

• The mean

• The median

• The mode

• The range

What is the correct box plot to represent the set of data from Q8?:

108, 31, 75, 87, 79, 88, 89, 118, 51, 89, 174, 95, 51, 70, and 73.

(You will need to have Q8 correct to answer this!)

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