Final answer:
The Totals button in the Report Layout Tools Design tab is used to add functions like sum, average, maximum, and minimum to columns in a data report, which is part of data organizing and summarizing in descriptive statistics.
Step-by-step explanation:
The correct answer to the question is option 'c) Totals.' In the Grouping & Totals group within the Report Layout Tools Design tab of a data analysis software like Microsoft Excel, the Totals button allows users to add summary functions such as sum, average, maximum, or minimum to a column of numbers. This feature is a part of descriptive statistics which helps in organizing and summarizing data. Depending on the software or the tool being used, the calculation of these statistical measures might differ slightly, but the concept remains the same.
For example, when working in a spreadsheet program, you could enter the data into a list and then use built-in functions to calculate one-variable statistics like mean, median, and mode. As part of this process, it is likely you will also have to sum up columns and ensure that any addition or subtraction calculations honor the rules of significant figures, limiting reported answers to the rightmost column where all numbers have significant figures in common.