A_Few_Good_Graphs

A_Few_Good_Graphs - A Few Good Graphs Engineering Graphs A...

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A Few Good Graphs
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Engineering Graphs A graph is a pictorial representation of data. It must fulfill a function that a simple tabulation of the data cannot: otherwise the graph is a waste of time. A good graph is easy to understand and attractive in appearance. A graph should be an accurate representation of the data.
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A majority of data can be presented in either tabular or graphic form. A well prepared graph can sometimes convey much more information than a table.
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The previous data sets can all give the same linear fit, but a look at their graphs immediately reveal problems.
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The first graphical representations of data occurred in maps. Eventually maps were used to display scientific and statistical data. Edmond Halley, 1686
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London 1854 Dr. John Snow
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Charles Minard, 1861
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Data graphs in the form of time series arrived in the 1700’s. One of the first innovators of modern graphical design was William Playfair.
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Data to ink ratio: low American Political Science Review, 61 (1967)
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Data to ink ratio: ≈ 0.7 The Quantitative Analysis of Social Problems (1970)
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Data to ink ratio: 0 Public Opinion and Politics, A Reader (1970)
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A_Few_Good_Graphs - A Few Good Graphs Engineering Graphs A...

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