How to plot scatter plot using plot function in R?
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How to plot scatter plot using plot function in R?

How to plot scatter plot using plot function in R?

This recipe helps you plot scatter plot using plot function in R

Recipe Objective

How to plot scatter plot using plot function in R? Scatter plots are graphs that represent a relation between an independent variable (x) and a dependent variable (y). The plot represents data on a 2 dimensional plane, where dependent variable (y) is plotted on the Y-axis and an independent variable (x) is plotted on the X-axis. Scatter plots are used to explain the correlation between the two variables. There are mainly 3 cases in scatter plot correlation – - Positive correlation - Negative correlation - No correlation Scatter plots help us understand and visualize the data properly. This recipe demonstrates an example of scatter plots.

Step 1 - Define the 2 vectors

x <- c(2,3,8,9,4,6,9,7,6,9) y <- c(3,9,5,6,8,6,5,8,9,3)

Step 2 - Plot the graph

Syntax for scatter plot - plot(x, y, main, xlab, ylab, xlim, ylim, axes) where, x - independent data points, y -independent data points, main - title of the correlation plot, xlab - title of the x axis, ylab - title of the y axis, xlim - limits for x axis data points, ylim - limits for y axis data points, axes - whether both the axes should be drawn on the plot.

plot(x,y,main="Correlation between x and y",xlab="x data points", ylab= "y data points", xlim=c(1,10),ylim=c(1,10))

Step 3 - Find the correlation

corelation <- cor(x,y) corelation # the scatter plot shows a negative correlation between the two variables.
 "Correlation between the two variables is :" -0.259788098433717 

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