In a recent analysis of quarterly revenue for a company over the past five years, a financial analyst decided to model the revenue using a linear trend model. The model was expressed in the form:
Revenue = $a + b imes t$
where:
After fitting the model, the analyst noted that the slope coefficient ($b$) was positive, indicating an upward trend in the revenue. Given this information, which of the following statements is true regarding the implications of the trend model?