Answer:
1. productivity 2. cost 3. productivity in terms of output per dollars of a resource's unit cost 4. Higher.
Explanation:
Productivity is a formula where the total production is calculated in terms of resources needed to produce it. The variance of this ratio can indicate if a company if used wisely or poorly its resources. In order to make comparisons among different financial ratios, the productivity per resource has to be divided per the total cost of that resource. The value obtained could be then compared, because it is terms of dollars.