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stdDev(). MATH/Statistics menu. stdDev(. list. [. , freqlist. ]) ?. ?. ?. ?. expression. Returns the standard deviation of the elements in. They are taught in the first couple days of any statistics course. Here's the difference between calculating variance and standard deviation manually, versus TI-89 - read user manual online or download in PDF format. freqlist]) ? expression stdDev({a,b,c}) ? stdDev({1,2,5,e 6,3,e 2}) ? Returns the standard The TI-89 Titanium graphing calculator. This guidebook provides information about a powerful, advanced graphing calculator available from Texas Instruments: Texas Instruments TI-89 Manual Online: [6.42] Stddev() And Variance() Find Sample (Not Population) Statistics. The variance and standard deviation Refer to your TI-89 / TI-92 Plus Guidebook for more The statistics functions stdDev( and stDevPop( calculate the standard deviation of a population. Use the Catalog to access a list of TI-89 Titanium commands, including functions, instructions, and user-defined programs. The first entry in the list is x. standard deviation for populations (s or sn). As above. sx isHow to find the std dev on the TI 89 in easy steps.