# Using Formulas and Functions in Microsoft Excel 2013

• 4/15/2013

When you share a workbook with your colleagues, some of the values in that workbook might change rapidly as new data is entered. For example, workbook data probably will change quickly if you are evaluating stock prices. Stock market values change frequently, so your data will as well. You can monitor the value in a cell even while you’re using another workbook by setting a watch. When you set a watch, the values of the cells you’re monitoring appear in the Watch Window.

Another way that you can monitor your data is to check the result of part of a calculation by using the Evaluate Formula dialog box. When you click the Evaluate Formula button, Excel displays the formula in the active cell and the subtotal for part of the calculation. You can move through the formula bit by bit, with Excel showing you the result of each piece of the formula.

### Monitor a formula for changes

1. Click the Formulas tab.

2. Click Watch Window.

4. Select the cells that you want to watch.

6. Click Watch Window.

### Delete a watch

1. Click the Formulas tab.

2. Click Watch Window.

3. Click the watch that you want to delete.

4. Click Delete Watch.

5. Click the Close button.

### Evaluate parts of a formula

1. Click the cell with the formula that you want to evaluate.

2. Click the Formulas tab.

3. Click Evaluate Formula.

4. Click Evaluate (one or more times) to move through the formula’s elements.

5. Click Close.

#### Table 6-1. New functions in Excel 2013

 Category Function Name Description Date and Time DAYS Calculates the number of days between two dates. Date and Time ISOWEEKNUM Returns the number of the ISO week number of the year for a given date. Engineering BITAND Returns a bitwise AND of two numbers. Engineering BITLSHIFT Returns a numbered generated by shifting the bits in a number to the left by a specified number of places. Engineering BITOR Returns a bitwise OR of two numbers. Engineering BITRSHIFT Returns a number generated by shifting the bits in a number to the right by a specified number of places. Engineering BITXOR Returns a bitwise XOR of two numbers. Engineering IMCOSH Returns the hyperbolic cosine of a complex number. Engineering IMCOT Returns the cotangent of a complex number. Engineering IMCSC Returns the cosecant of a complex number. Engineering IMCSCH Returns the hyperbolic cosecant of a complex number. Engineering IMSEC Returns the secant of a complex number. Engineering IMSECH Returns the hyperbolic secant of a complex number. Engineering IMSINH Returns the hyperbolic sine of a complex number. Engineering IMTAN Returns the tangent of a complex number. Financial PDURATION Calculates the number of periods that an investment will take to reach a value. Financial RRI Calculates the equivalent interest rate for the growth of an investment. Information ISFORMULA Returns TRUE if a cell contains a formula. Information SHEET Returns the sheet number of a sheet. Information SHEETS Returns the number of sheets in a reference. Logical IFNA Returns a value that you specify if an expression results in an #N/A error; otherwise, it returns the value of the expression. Logical XOR Returns the logical exclusive OR of all arguments (that is, it returns TRUE if exactly one argument is true). Lookup and Reference FORMULATEXT Returns the formula in the referenced cell as text. Math and Trigonometry ACOT Returns the arccotangent of a number. Math and Trigonometry ACOTH Returns the hyperbolic arccotangent of a number. Math and Trigonometry ARABIC Converts a number written as a Roman numeral into an Arabic number. Math and Trigonometry BASE Converts a number into a text representation of the number in a given base. Math and Trigonometry CEILING.MATH Rounds a number up to the nearest integer or to the nearest significant multiple. Math and Trigonometry COT Returns the hyperbolic cosine of a number. Math and Trigonometry COTH Returns the cotangent of an angle. Math and Trigonometry CSC Returns the cosecant of an angle. Math and Trigonometry CSCH Returns the hyperbolic cosecant of an angle. Math and Trigonometry DECIMAL Converts a text representation of a number in a given base to a decimal number. Math and Trigonometry FLOOR.MATH Rounds a number down to the nearest integer or to the nearest significant multiple. Math and Trigonometry ISO.CEILING Returns a number that is rounded up to the nearest integer or to the nearest significant multiple. Math and Trigonometry MUNIT Returns the unit matrix of the specified dimension. Math and Trigonometry SEC Returns the secant of an angle. Math and Trigonometry SECH Returns the hyperbolic secant of an angle. Statistical BINOM.DIST.RANGE Calculates the probability of a result using the binomial distribution. Statistical COMBINA Returns the number of combinations for a given number of items, allowing replacement. Statistical GAMMA Returns the Gamma function value. Statistical GAUSS Returns 0.5 less than the standard normal cumulative distribution. Statistical PERMUTATIONA Returns the number of permutations for a given number of items, allowing replacement. Statistical PHI Returns the value of the density function for a standard normal distribution. Statistical SKEW.P Returns the skewness of a distribution based on the population instead of a sample from the population. Text NUMBERVALUE Converts text to a number. Text UNICHAR Returns the Unicode character referenced by a number. Text UNICODE Returns the Unicode number of the first character of a text string. Web ENCODEURL Returns a URL-encoded string. Web FILTERXML Returns specific data from XML content using a user-supplied xpath value. Web WEBSERVICE Returns data from a web service.