September 2018
Beginner to intermediate
140 pages
2h 52m
English
Content preview from Applied Data Visualization with R and ggplot2
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Density Plots
When the statistics are low, histograms are ineffective at determining the shape of a distribution, because they are so strongly affected by the number of bins used.
A density plot is an alternative, in order to see the distribution of the data. It uses an estimation technique to convert the histogram into a continuous curve and plot the probability distribution of the data. The area of a density plot is usually scaled to unity.
Sometimes, you might need to compare two histograms with different amounts of data, while also wanting to see the shapes of the histograms. For example, you might wish to compare the age distribution of clients from a bigger and a smaller company that sell similar products. You would like to overlay ...
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