The data below presents monthly closing prices of Standard & Poors 500 Index, Wal-Mart, and Target to calculate the holding-period returns for the 24 months from May 2013 through May 2015

	Month	S&P500	Walmart	Target
2013	May	1.631	74,84	69,50
	June	1.606	74,49	68,86
	July	1.684	77,94	71,25
	August	1.633	72,98	63,31
	September	1.682	73,96	63,98
	October	1.757	76,75	64,79
	November	1.806	81,01	63,93
	December	1.848	78,69	63,27
2014	January	1.783	74,68	56,64
	February	1.859	74,70	62,54
	March	1.872	76,43	60,51
	April	1.884	79,71	61,75
	May	1.924	76,77	56,76
	June	1.960	75,07	57,95
	July	1.931	73,58	59,59
	August	2.003	75,50	60,07
	September	1.972	76,47	62,68
	October	2.018	76,27	61,82
	November	2.068	87,54	74,00
	December	2.059	85,88	75,91
2015	January	1.995	84,98	73,61
	February	2.105	83,93	76,83
	March	2.068	82,25	82,07
	April	2.086	78,05	78,83
	May	2.182	75,86	79,29

Plot (1) the holding-period returns for Wal-Mart against the Standard & Poors 500 Index, and (2) the Target holding-period returns against the Standard & Poors 500 Index. From your graphs, describe the nature of the relationship between stock returns for Wal-Mart and the returns for the S&P 500 Index. Make the same comparison for Target