Custom calculation provides the ability to design computations you may need that extend beyond the most common reporting figures. You can either calculate static numbers (such as 3+4=7), or you can find the ratio between two weighted-score questions. In order to get information from your response question, you must first choose the question you want and the type of data you want to take from that question. You have the following options available to you:

**CASES**- gives you the number of cases in the database that have data for the selected question. For example, to find out the number of cases for a multiple choice question, just select the question and choose the**CASES**option then click**Add**and then click**Finish**. Now place the number on the report page.**SUM**- gives the sum total for a question that has a numeric response. This means this option is only valid for write in number questions or weighted score questions.**AVG**- gives the average for a question that has a numeric response. This means this option is only valid for write in number questions or weighted score questions.**STDEV**- gives the standard deviation for a question that has a numeric response. This means this option is only valid for write in number questions or weighted score questions.**STERR**- gives the standard error for a question that has a numeric response. This means this option is only valid for write in number questions or weighted score questions.**RESP**- gives the total number of responses for a specific question. For example if you wanted to know how many people answered option A for a multiple choice question you would need to select the question, choose**RESP**from the function list and then type in the code for the response that you are interested in. Now click on the**Add**button, choose**Finish**and then place the number on the report page.**%RESP**- gives the percentage number of responses for a specific question response. For example if you wanted to know the percentage number of people who answered option A for a multiple choice question you would need to select the question, choose**ALLCASES**- provides you with the number of cases in your database. To get the number of cases in your database, just select**ALLCASES**from the function list and click**Add**, then click on**Finish**, now place the number on the report page.

If you want to use the data from a question in a specific calculation, just follow the
instructions above to **Add** the field to the **Calculation**
window, then add any additional mathematical symbols or numbers you need to accomplish the
calculation you want. If you click on any of the keypad buttons on the right of the
Calculate tab the number or symbol will be placed automatically into the Calculation window.

Note: You may also type directly into the calculation window. If you know exactly what you want, this is the quickest method for setting up a calculation.

On the **Calculate** window you have a few choices for your comment formatting:

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