Question: Which of the following is NOT a reason to calculate a weighted average when calculating a total average sales per guest over a period of time, such as a week or a month? Group of answer choices To make sure differences in sales and guest served from one day to another are taken into consideration. So that the figure is not over or understated. An incorrect figure used for forecasting future revenue could cause annual budget problems It's quicker and easier to just average the daily guest check averages over the period.