How to Calculate Variance From a Ti84

By Mark Stansberry
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Variance is a statistical parameter that analyzes the spread, or distribution, of data. Calculating variance quickly requires a statistics calculator like the TI-84 graphing calculator. The TI-84 calculator has a statistics module that lets you automatically calculate the most common statistical parameters from a list of statistical data you enter. These parameters include the mean, the standard deviation, the mode and others. Because the variance is defined as the standard deviation raised to the power of 2, you can use your TI-84 to calculate the variance from the standard deviation that the TI-84 computes.

About the Author

Mark Stansberry has been a technical and business writer over for 15 years. He has been published in leading technical and business publications such as "Red Herring," "EDN" and "BCC Research." His present writing focus is on computer applications programming, graphic design automation, 3D linear perspective and fractal technology. Stansberry has a Bachelor of Science in electrical engineering from San Jose State University.