Instruction: Define an Array Formula and provide an example of how it might be used in data analysis.
Context: This question probes the candidate's knowledge of advanced Excel functions, specifically Array Formulas, and their application in handling and analyzing data arrays efficiently.
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For example, let's consider we're working with a dataset that contains daily sales figures for multiple products over a period of a month. Suppose we want to calculate the total sales of all products for the entire month. Without an Array Formula, we might resort to summing each day's sales individually and then summing those totals, which is both time-consuming and prone to errors, especially with large datasets.
Here's where an Array Formula becomes invaluable. By using...