Summary  
This chapter explains how to combine conditional logic with aggregation by using the SUMIF function, which applies a criterion to a range of cells and then sums only those that meet it, streamlining what would otherwise require separate IF and SUM steps.  

General domain of usage  
Spreadsheet data analysis

Some **Excel** formulas combine multiple functions into one. These are called compound functions. For example, `SUMIF` blends `SUM` and `IF` to total values that meet specific criteria, though it doesn’t behave exactly like using `SUM` and `IF` separately.

It's important to note that the **criterion applies to the evaluated cells**, not the **sum itself**. This can be confusing. It's easy to assume that if the **criterion isn't met**, nothing will be summed.

You can break this function into its components and analyze the steps it takes to understand how it works. Let's start with an `IF` formula.

You can then use the `SUM` formula on `C1:C6` to get the same result—but `SUMIF` is **more convenient** since it does everything in **one step**. It's also **less error-prone**, as you don't need to handle the `if_false` case like you would with `IF`.

What does the `SUMIF` function do in Excel?

Unlock the full potential of Excel by learning how to use formulas and functions to simplify tasks, analyze data, and work more efficiently. You'll explore everything from basic arithmetic and conditional logic to dynamic arrays and powerful lookup tools like VLOOKUP, MATCH, and INDIRECT. With practical examples and clear explanations, you'll build a solid foundation and discover smarter ways to manage and manipulate your spreadsheets.

Learn how to enter and use Excel formulas for calculations, including basic operations like addition, subtraction, multiplication, division, and exponentiation. Understand the importance of using functions to make your formulas clearer and more efficient.

Learn array formulas in Excel and how they enable multiple calculations on sets of values simultaneously. Explore how to use specific functions like UNIQUE, SORT, FILTER, and TRANSPOSE.

In this section, you will learn about lookup and reference formulas in Excel. These formulas enable you to search for and retrieve specific data from a table or range. You will explore essential functions such as VLOOKUP, HLOOKUP, MATCH, INDEX, and XLOOKUP, which are invaluable for finding and referencing data efficiently.

IF and SUMIF Functions in Excel

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IF and SUMIF Functions in Excel