Final answer:
Alejandro should look up monthly sales over five years to determine whether there is a pattern of sales decreasing in February every year.
Step-by-step explanation:
Alejandro should look up monthly sales over five years to determine whether there is a pattern of sales decreasing in February every year.
By analyzing the monthly sales data over a longer period of time, Alejandro can identify any recurring patterns or trends that may explain the decrease in sales during February.
For example, if Alejandro notices that February sales have consistently been lower compared to other months over the past five years, then it could indicate a seasonal pattern where sales tend to dip during that month.