Using R program please How do you find the standard deviatio

Using R program please. How do you find the standard deviation of each variable in the \'mtcars\' data set?

Solution

\'mtcars\' is a data frame with 32 observations on 11 variables.

Now to calculate satndard deviation we can simple use the command sd(variable_name)

To calculate the standard deviation of each variable we can use the followings-

Now it will display standard deviation of all the variables of \'mtcars\'.

Another way would be following-

>sd(mpg)

>sd(cyl)

>sd(disp)

>sd(hp)

>sd(drat)

>sd(wt)

>sd(qsec)

>sd(vs)

>sd(am)

>sd(gear)

>sd(carb)

In this way we can calculate standard deviation of all the variables of \'mtcars\'.