What type of materials is purchased from a vendor?

Bob Stewart plans to visit his financial planner today to discuss investment strategy. As a young accountant, he knows he can afford to invest in a few riskier investments. Which of the following ratios will be an important measure of profitability for Bob?

A) return on sales B) return on equity C) inventory turnover D) acid test ratio

External validity:

a. exists when the research design accurately identifies causal relationships. b. refers to the extent to which a causal relationship found in a study can be expected to be true for the entire defined target population c. can be threatened by selection bias d. refers to the degree that the design and its procedures can be replicated and achieves similar conclusions about hypothesized relationships e. refers to causal research designs that manipulate the independent variables to measure the dependent variable in a natural setting