Final answer:
The Total Row check box is found in the Table Style Options group on the DESIGN tab in Excel. Checking this box enables users to add a total row to their table for summarizing data.
Step-by-step explanation:
The Total Row check box is located in the Table Style Options group on the DESIGN tab. This function within Excel allows you to quickly add a total row at the bottom of a table to sum up numerical data, among other functions like average, count, etc.
When engaging with Excel tables, utilizing the Table Style Options is a handy way to customize the appearance and functionality of your table data. Simply by checking the Total Row option, Excel will automatically create a new row at the end of your table for totals. You can then select from various functions such as sum, average, count, etc., for each column that requires it.