Question $8$

The code shown in the video accompanying this assignment demonstrates that you can

use the function or command sd$)$ to find the standard deviation of a variable. For example

if you have a data set named mydata and a variable named myvariable then

sd $($mydata$myvariable$)$ will return the standard deviation of myvariable. Use the code

below to create a new data set of only diamonds with color $"$E$."$

color.E diamonds$[$which$($diamonds$color $=="$E$"),]$

What is the standard deviation of the price of $E$ color diamonds?