Explain about each ratio of two lines that are well summarized with the citation of the site from which you brought the *******

citation is required plz put citation I need it necessary dont solve it without citation thank you i hope solve it with citation or put the link

Ratio Business Risk Coefficient of variation of operating income Coefficient of variation of net income Coefficient of variation of revenues Ratio Business Risk Coefficient of variation of operating income Coefficient of variation of net income Coefficient of variation of revenues