Suppose a product manager at a particular firm sees that, when she charts/graphs sales volumes over time, unit sales rise over a 2-year timehorizon even though she knows that the price for her product has been increased two separate times. Given the information in the chart, the product manager suspects that she should continue to raise price.
What factors might help describe the happenstance she observes in the chart, and what implications does it have for the firm?
In particular, can the product manager reasonably determine the numerical price-to-sales volume relation this way? What other factors, if any, should the product manager consider and, if sheacquired help from an econometrician, how might a zero response demand curve be manifested?
Keep in mind that Managerial Economics is a quantitative discipline, and make your ideas as detailed and complete as you can.