kindly include step by step explanations

1. Use finance Yahoo, By the most recent time, across your selected group of rival corporations, which are Walmart, target, ebay, Alibaba and Amazon, which firms have been rated with relatively better credit quality than peers?
2. Use finance yahoo, By the most recent time, across your selected group of rival corporations which are Walmart, target, ebay, Alibaba and Amazon, which firms have had relatively greater market risk levels (in terms of "Beta" value amount) than peers?
3. Use finance yahoo, During the past 5 years, across your selected group of rival corporations, which are Walmart, target, ebay, Alibaba and Amazon, which firms have earned a better risk-to-return trade-off (in terms of "smaller positive coefficient of variation" and/or "larger positive Jensen's Alpha") than peers?