a time series and cross sectional analysis d2

Below are some key financial ratios for Amazon and Walmart, two competitors in the retail market, over a three year period. Pick one of the financial ratios, complete a time-series and cross sectional analysis. Your document should be between 350-500 words.

Amazon
12-2017 12-2016 12-2015
Days in Inventory 36.59 37.41 39.78
Receivables Turnover 16.54 18.42 17.78
Asset Turnover 1.66 1.83 1.78
Current Ratio 1.04 1.04 1.08
Debt/Equity 1.37 0.79 1.06
Return on Equity 12.91% 14.52% 4.94%
Interest Coverage 5.49 9.04 4.42
Profit Margin 1.71% 1.74% 0.56%
Walmart
01-2018 01-2017 01-2016
Days in Inventory 42.44 44.21 45.30
Receivables Turnover 87.40 84.80 77.75
Asset Turnover 2.48 2.44 2.39
Current Ratio 0.76 0.86 0.93
Debt/Equity 0.47 0.54 0.55
Return on Equity 12.67% 17.23% 18.15%
Interest Coverage 7.49 9.66 9.49
Profit Margin 1.97% 2.81% 3.05%