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Finding the mean of a list of variables - Texas Instruments TI-89 Calculator

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Use the mean() function in the MATH/Statistics menu to find the mean of a list. For example, mean({1,2,3,4,5}) will produce 3. Likewise, if the list {1,2,3,4,5} is stored in the variable z, mean(z) will also produce 3. You can also specify a second argument to mean() to specify a frequency list for groupd statistics.

For full details, refer to the "Statistics and Data Plots" chapter in the guidebook. If you've misplaced your guidebook, you can download a copy from http://education.ti.com/educationportal/downloadcenter/SoftwareList.do?website=US&tabId=2&paneId=17

Posted on Aug 03, 2010

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