mathematical formula to calculate standard deviation is $SD = (\frac{SSD}{n-1})^{0.5}$
Would like to find SSD and how to write in r ?
SSD = ????
mathematical formula to calculate standard deviation is $SD = (\frac{SSD}{n-1})^{0.5}$
Would like to find SSD and how to write in r ?
SSD = ????