What Excel function is used to calculate combinations?

The Excel function used to calculate combinations is indeed the function denoted by =COMBIN(). This function is specifically designed to determine the number of ways to choose a subset of items from a larger set, where the order of selection does not matter.

For example, if you are trying to find out how many different teams of 3 can be formed from a group of 5 people, the =COMBIN() function allows you to input the total number of items (5) and the size of the group to choose (3). The result gives you the number of unique combinations that can be formed, which is essential in many statistical analyses and probability calculations.

Using this function enhances efficiency, as it handles the underlying mathematical formula for combinations, which is calculated using factorials, making it easier for users who may not have a strong background in mathematics.