Last week’s post, “A Histogram is NOT a Bar Chart ”, explained that bar charts were used for comparing categorical variables and that histograms were used to show the distributions of binned ...
Histogram of annual CO2 emissions in kg for 1000 Euro 4 cars and 1000 Euro 6 cars (subsamples of the full data set). The figures show that several Euro 4 vehicles have lower cumulative CO2 emissions ...
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