The tab that she will click on the menu that appears after clicking on Totals in the Quick Analysis option is Sum
Quick Analysis is known to be the tool that helps one to known a range of data and it also aid one to pick the right chart with just some commands.
Note that in this tool, one has to Select a range of cells, also Select the Quick Analysis button that will show at the bottom right corner of the the clicked data.
See options below
a.
Sum
b.
Count
c.
Average
d.
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