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a) The following table lists the top 10 exchange-traded funds in United States in terms of 52-week returns. Exchange-Traded Funds Return (%) MicroSectors U.S. Big Oil Index 3X Leveraged ETN 390.56 Direxion Daily S&P Oil & Gas Exp. & Prod. 205.13 Direxion Daily Energy Bull 2X 186.49 SharesProShares Ultra Oil & Gas 184.20 ProShares Ultra Bloomberg Natural Gas 157.43 Pacer iPath Gold Trendpilot ETN 155.71 United States 12 Month Natural Gas Fund LP 149.64 United States Natural Gas Fund LP 131.62 ProShares Ultra Bloomberg Crude Oil 130.70 iPath Series B Bloomberg Natural Gas Subindex 125.47 Total Return ETN Source: Extracted from VettaFi ETF Database i. Find the mean and median of the returns. ii. Calculate the variance and standard deviation of the returns. Interpret the standard deviation. 111. Identify is there any outlier by using 1.58*IQR rule. Explain your answer. iv. Illustrate the shape of the distribution for this data set by using graph. Calculate the Pearson's coefficient of skewness