Extra Space Storage
	Price	Dividends
12/31/19	105.62	3.56
12/31/18	90.48	3.36
12/31/17	87.45	3.12
12/31/16	77.24	2.93
12/31/15	88.21	2.24
12/31/14	58.64	1.81
12/31/13	42.13	1.45
12/31/12	36.39	0.85
12/31/11	24.23	0.56
12/31/10	17.40	0.40
12/31/09	11.55	0.38
12/31/08	10.32	1.00
12/31/07	14.29	0.93
12/31/06	18.26	0.91
12/31/05	15.40

S&P 500
Price	Dividends
3,230.78	58.02
2,506.85	53.54
2,673.61	48.74
2,238.83	45.55
2,043.94	43.20
2,058.90	39.27
1,848.36	34.80
1,426.19	31.04
1,257.61	26.35
1,257.64	22.68
1,115.10	22.27
903.25	28.36
1,468.36	28.77
1,418.30	24.67
1,248.29

1	Calculate HPR for each year
2	Calculate Arithmetic Mean HPR
3	Calculate Standard Deviation
4	Calculate Geometric Mean
5	Which investment contains more risk per return?
6	What is the correlation between these two investments?
7	Would there be any diversification benefit by adding Extra Space Storage to an S&P 500 portfolio?