Microsoft Excel's IF function is one of the most powerful functions
            in Excel.  It allows you to set a cells value based on the result of
            evaluating a "condition".  A condition is essentially a question where
            the answer is always either true or false.  For example, the
            expression A1 < 10 is a condition that tests whether
            the cell A1 is less than 10.  If it is, it will return true; if it is
            not, it will return false.  This is a good example of the type of
            question that Excel's IF function can handle.
          
A3 >= B5.You should use Excel's IF function whenever you want a cells value to change depending on the answer to a question. For example, I want to show "good" for people who received an A or a B in the class and "bad" for anyone who received a lower grade.
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