c. 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.

d. From your graphs in part (c), describe the nature of the relationship between the stock returns for Wal-Mart and the returns for the S&P 500 Index. Make the same comparison for Target.

MONTH	S&P 500	WAL-MART	TARGET
2013
May	$1,631	$74.84	$69.50
June	1,606	74.49	68.86
July	1,686	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	74.7	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	75.5	60.07
September	1,972	76.47	62.68
October	2,018	76.27	61.82
November	2,068	87.54	74
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	2,128	75.86	79.29