by The Open University
Available in 23 free installments
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After studying this Unit you should:
know and be able to use the terms: Boxplots, box, whisker, upper and lower adjacent values, rate, time series, line plot.
be aware of the idea that the general pattern of a set of data, in terms of location, dispersion and skewness, can be graphically represented in a boxplot, that boxplots can be used to provide a quick and simple comparison of data sets; that patterns in tabular data can be made clearer by leaving out unhelpful information, by including extra pieces of useful information, or by drawing appropriate graphs; and that calculating appropriate proportions and rates can help in the process of interpreting tabular data.
Develop the statistical skill to be able to describe and compare data sets on the basis of boxplots; decide how to re-present data in a table to make any patterns clearer; decide on appropriate rates or proportions to calculate from tabular data; and decide on appropriate graphs to draw to clarify patterns in tabular data.
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