Page 268 - Data Science class 11
P. 268

Here, too, we’ll use the R built-in mtcars data set.

             # Simple Scatterplot
             attach(mtcars)
             # Give the chart file a name.
             png(file = "scatter1.png")
             # Plotting the chart
             plot(wt, mpg, main="Scatterplot Example",
                  xlab="Car Weight ", ylab="Miles Per Gallon ", pch=19)
             # Add fit lines
             abline(lm(mpg~wt), col="red")
             lines(lowess(wt,mpg), col="blue")
             # Saving the file.
             dev.off()



























        7.9 Box plot

        A box plot is a graphical technique for summarising a set of data on an interval scale. Boxplots are extensively used
        in descriptive data analysis. Using this, we can show the shape of the distribution, its central value, and its variability.




























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