Scatterplot matrices of bivariate data are helpful to identify relationships between variables in a dataset. We can create scatterplot matrices using `pairs()`

and the tilde sign, along with plus signs that instruct R to include the desired variables:

pairs(~WEIGHT_1 + WEIGHT_2 + HEIGHT, data=T,main="Scatterplot Matrix of Medical Data")

This syntax gives the following matrix:

If we want a smooth curve (LOWESS) in each bivariate plot, we include the argument `panel=panel.smooth`

:

pairs(~WEIGHT_1 + WEIGHT_2 + HEIGHT, data=T,main="Scatterplot Matrix of Medical Data", panel = panel.smooth)

The matrix obtained is as follows: ...

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