![]() ![]() In both cases, you would be wanting to determine whether a cause-and-effect relationship may be inferred from the graph.Ī scatter plot would answer questions like, “Does there appear to be a relationship between daily temperature and daily rainfall? Can we expect that a change in one will likely result in a predictable change in the other?” If your chart is supposed to demonstrate a relationship between two numeric variables, a scatter plot is probably a good choice.Įxamples of this may be: a scatter plot showing the correlation between people’s salaries and the size of their homes, or between the amount spent on advertising and the amount of revenue generated. The decision to use a scatter plot, or any kind of chart for that matter, will usually be based on what kind of story your chart is supposed to tell. In this case, the date column (column A) was omitted from the chart source data as it was irrelevant to the relationship between the two variables. This defeats the purpose of a chart, which is to simplify complex data.Ī scatter plot of the same data, on the other hand, would look like this:Ī clear inverse relationship is shown between both variables on the above scatter plot.
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