Problem 6.7. Expected Return, Standard Deviation

Calculate average rate of returns and standard deviation of the Coca Cola stock price and the Dow Jones Index, based on data below.

DATA		Part Solution	DATA	Part Solution
		(Current return/Previous return)-1		(Current return/Previous return)-1
Month	Coca Cola Stock Prices	Returns	Dow Jones Index Prices	Returns
Jan-20	58.40		28256.03
Feb-20	53.49	-0.08	25409.36	-0.10
Mar-20	44.25	-0.17	21917.16	-0.14
Apr-20	45.89	0.04	24345.72	0.11
May-20	46.68	0.02	25383.11	0.04
Jun-20	44.68	-0.04	25812.88	0.02
Jul-20	47.24	0.06	26428.32	0.02
Aug-20	49.53	0.05	28430.05	0.08
Sep-20	49.37	0.00	27781.7	-0.02
Oct-20	48.06	-0.03	26501.6	-0.05
Nov-20	51.60	0.07	29638.64	0.12
Dec-20	54.44	0.06	30606.48	0.03