Abstract
Reliance on simple number summaries, such as correlation coefficients, without plotting the data used to derive the coefficients, can lead one to misinterpret their real meaning. 1–3 An excellent example of this is shown in Fig. 1, which shows a series of plots of data sets, all of which have correlation coefficients, some of which apparently indicate reasonably strong correlation. However, the plots reveal clearly the dangers of relying only on number summaries. They also demonstrate the value of graphical displays in understanding data behaviour and identifying influential observations.
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Thompson, J.M. (1992). Visual Representation of Data Including Graphical Exploratory Data Analysis. In: Hewitt, C.N. (eds) Methods of Environmental Data Analysis. Environmental Management Series. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-2920-6_6
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