Based on above data calculate and explain for:

a.) Risk and return of individual stocks: (30 marks)

1. Expected returns
2. Variance and standard deviation of returns
3. Covariance of returns
4. Correlation coefficient of returns

2. )Expected risk and return of portfolio: (30 marks)

1. Expected returns of portfolio
2. Standard deviation of portfolio

Date IPrice Open High Low Jan-20 5.38 5.9 6.05 Dec-19 5.92 5.72 6.03 Nov-19 5.7 5.67 6.12 Oct-19 5.68 5.61 5.72 Sep-19 5.61 5.87 5.87 Aug-19 5.87 6.65 6.73 Jul-19 6.72 6.69 6.92 Jun-19 6.62 6.24 6.86 May-19 6.25 6.89 6.89 Apr-19 6.88 6.54 6.91 Mar-19 6.49 7.13 7.13 Feb-19 7.13 6.73 7.38 Jan-19 6.72 5.92 6.73 Dec-18 5.91 6.05 6.38 Nov-18 6.08 7.11 7.53 Oct-18 7.11 7.58 7.76 Sep-18 7.56 8.35 8.35 Aug-18 8.35 8.47 8.55 Jul-18 8.47 8.21 8.57 Jun-18 8.14 8.52 8.69 May-18 8.51 8.65 8.71 Apr-18 8.65 8.5 8.8 Mar-18 8.45 8.51 8.79 Feb-18 8.5 9.31 9.31 Jan-18 9.25 8.83 9.43 Dec-17 8.84 8.54 8.91 Nov-17 8.45 8.69 9.13 Oct-17 8.69 9.15 9.36 Sep-17 9.17 9.41 9.59 Aug-17 9.33 9.33 9.44 Jul-17 9.34 9.07 9.36 Jun-17 9.04 9.55 9.61 May-17 9.58 9.5 9.61 Apr-17 9.45 9.21 9.61 Mar-17 9.21 8.73 9.51 Feb-17 8.82 7.82 8.82 Jan-17 7.82 7.58 8.14 Vol. 5.38 95.64M 5.6 92.07M 5.62 88.53M 5.47 90.45M 5.6 132.47M 5.7 123.21M 6.4 84.20M 6.24 65.01M 6.14 62.70M 6.41 63.04M 6.42 81.57M 6.73 65.76M 5.72 134.35M 5.72 111.90M 6.07 178.76M 6.87 100.18M 7.55 102.96M 8.25 87.62M 8.04 66.29M 8.08 88.78M 8.13 104.28M 8.2 55.65M 8.4 70.13M 8.43 84.12M 8.73 70.63M 8.36 72.99M 8.45 67.63M 8.66 61.61M 9.11 55.61M 9.22 44.23M 8.63 53.68M 8.91 59.68M 9.28 75.42M 8.88 79.82M 8.7 79.10M 7.81 71.85M 7.54 66.28M NAT Change % -9.09% 3.77% 0.34% 1.22% -4.33% -12.66% 1.48% 5.95% -9.23% 6.02% -8.99% 6.20% 13.77% -2.87% -14.44% -6.02% -9.40% -1.49% 4.04% -4.32% -1.57% 2.29% -0.58% -8.10% 4.67% 4.55% -2.76% -5.24% -1.65% -0.10% 3.29% -5.62% 1.32% 2.61% 4.39% 12.80% 2.50%