This short tutorial illustrates the two basic ways that SUMIF can be used in a spreadsheet.
The SUMIF function takes two or three arguments.
For the two argument version, the condition is applied to each cell in the range being SUMmed. In the example below, C9 is the sum of all values in C3:C8 that are greater than 5.
In the three argument version, the condition is applied to a separate range of cells. This range can be numerical of textual. In the example below, the values corresponding to Tom are summed in C10