(b) (i) Create boxplots for these two data sets (either drawn by hand or as a printout from Dataplotter or another suitable computer package). Include all the relevant information required for drawing boxplots The summary values can be displayed on the boxplots themselves or in a table to the side of the chart, as they appear in Dataplotter. (ii) Use the boxplot for radio station B to say whether the data are symmetric or skewed. If the
(b) (i) Create boxplots for these two data sets (either drawn by hand or as a printout from Dataplotter or another suitable computer package). Include all the relevant information required for drawing boxplots The summary values can be displayed on the boxplots themselves or in a table to the side of the chart, as they appear in Dataplotter.
(ii) Use the boxplot for radio station B to say whether the data are symmetric or skewed. If the data are skewed, then state whether they are skewed to the left or skewed to the right. What does this tell you about the spread of the data for radio station B?
(iii) The advertising company tries to summarise what the boxplot for radio station A is saying. Are the following statements true or false? In each case justify your answer.
(1) About one-quarter of the reporting periods for radio station A had less than 10 550 000 listeners.
(2) About three-quarters of the reporting periods for radio station A had more than 10 900 000 listeners.
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Create boxplots for these two data sets (either drawn by hand or as
a printout from Dataplotter or another suitable computer package).
Include all the relevant information required for drawing boxplots
as set out in Subsection 1.2 of Unit 11.
The summary values can be displayed on the boxplots themselves or
in a table to the side of the chart, as they appear in Dataplotter.
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