Quantitative Literacy Practice Exam 2025 – 400 Free Practice Questions to Pass the Exam

To find the mean annual rainfall in a town, one must typically add up the total rainfall amounts recorded over a defined period, such as several years, and then divide that total by the number of years. In this case, if the total annual rainfall across multiple years sums to a specific value, dividing that total by the number of years would yield the average, or mean, rainfall.

The mean annual rainfall of 46.14 inches suggests that this figure was arrived at through the correct calculations of adding the annual totals and then averaging them over the years considered. This data might have been derived from historical weather records or reports that track rainfall accurately.

Other figures like 44.00 inches, 50.00 inches, or 38.50 inches could represent either underestimations or overestimations of the actual mean based on the same data set. Notably, they might arise from inaccuracies in data entry, statistical errors, or simply reflecting averages from different datasets or years that do not accurately represent the specified time frame. Thus, selecting 46.14 inches as the mean railroad aligns with the method used to calculate averages properly and indicates a reliable understanding of how to interpret and calculate rainfall data.