The problem is attached below. Need help. Thanks in advance

Problem 1 Price Date 01/02/02 02/01/02 03/01/02 04/01/02 05/01/02 06/03/02 07/01/02 08/01/02 09/03/02 10/01/02 11/01/02 12/02/02 01/02/03 02/03/03 03/03/03 04/01/03 05/01/03 06/02/03 07/01/03 08/01/03 09/02/03 10/01/03 11/03/03 12/01/03 01/02/04 02/02/04 03/01/04 04/01/04 05/03/04 06/01/04 07/01/04 08/02/04 09/01/04 10/01/04 11/01/04 12/01/04 01/03/05 02/01/05 03/01/05 04/01/05 IBM 101.29 92.24 97.77 78.74 75.78 67.82 66.31 71.16 55.05 75.53 82.21 73.30 73.96 73.87 74.32 80.45 83.58 81.90 77.13 78.01 84.02 85.12 86.28 88.32 94.56 92.11 87.66 84.16 84.73 84.31 83.28 81.17 82.18 86.02 90.50 94.67 89.71 89.08 87.92 73.49 a WMT 55.81 57.70 57.10 52.04 50.40 51.31 45.87 49.88 45.99 50.02 50.34 47.25 44.71 44.96 57.69 52.77 49.30 50.37 52.47 55.53 52.42 49.75 52.30 49.96 50.71 56.09 56.34 53.80 52.72 49.67 50.15 49.95 50.45 51.13 49.37 50.21 49.81 49.06 47.77 44.94 Return Date 02/01/02 03/01/02 04/01/02 05/01/02 06/03/02 07/01/02 08/01/02 09/03/02 10/01/02 11/01/02 12/02/02 01/02/03 02/03/03 03/03/03 04/01/03 05/01/03 06/02/03 07/01/03 08/01/03 09/02/03 10/01/03 11/03/03 12/01/03 01/02/04 02/02/04 03/01/04 04/01/04 05/03/04 06/01/04 07/01/04 08/02/04 09/01/04 10/01/04 11/01/04 12/01/04 01/03/05 02/01/05 03/01/05 04/01/05 IBM WMT 05/02/05 06/01/05 07/01/05 08/01/05 09/01/05 10/03/05 11/01/05 12/01/05 01/03/06 02/01/06 03/01/06 04/03/06 05/01/06 06/01/06 07/03/06 08/01/06 09/01/06 10/02/06 11/01/06 12/01/06 01/03/07 02/01/07 03/01/07 04/02/07 05/01/07 06/01/07 07/02/07 08/01/07 09/04/07 10/01/07 11/01/07 12/03/07 01/02/08 02/01/08 03/03/08 72.88 71.58 80.52 77.96 77.58 79.18 86.18 79.68 78.81 77.98 80.14 80.02 77.93 74.92 75.50 79.29 80.24 90.41 90.30 95.44 97.40 91.58 92.88 101.49 105.45 104.11 109.45 115.83 116.94 119.23 104.78 107.69 106.70 113.86 115.52 45.17 46.10 47.20 43.14 42.04 45.39 46.59 45.04 44.38 43.65 45.63 43.50 46.96 46.69 43.14 43.51 47.99 47.95 44.86 45.10 46.57 47.18 46.07 47.02 46.93 47.43 45.30 43.23 43.25 44.79 47.46 47.30 60.60 69.78 52.37 b. IBM Average Var Stdev WMT 05/02/05 06/01/05 07/01/05 08/01/05 09/01/05 10/03/05 11/01/05 12/01/05 01/03/06 02/01/06 03/01/06 04/03/06 05/01/06 06/01/06 07/03/06 08/01/06 09/01/06 10/02/06 11/01/06 12/01/06 01/03/07 02/01/07 03/01/07 04/02/07 05/01/07 06/01/07 07/02/07 08/01/07 09/04/07 10/01/07 11/01/07 12/03/07 01/02/08 02/01/08 03/03/08 c. IBM WMT IBM WMT d. Weights IBM WMT Portfolio Std Dev Return 1. The sheet, \"P1\