keystroke for sample standard deviation HP 12C

CFA Level I
#1

can some one help on this. thanks

#2

Input the numbers using the Sigma+ button and then press g and decimal point (letter s in blue). That gives sample std dev. For population std dev press g and 0 (x bar in blue) and then add that to the other group of numbers (sigma +) and then press g and decimal again.

#3

thanks DTM86

#4

how to calculate the covariance and the portfolio variance? any idea?

#5

http://h20219.www2.hp.com/Hpsub/downloads/HP12CPcorrelation.pdf Just follow the like my son