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Standard Deviation TI-83 Calculator: Easy Steps

Probability and Statistics > TI 83 for Statistics > Standard Deviation TI-83

Standard Deviation TI-83: Overview

Standard Deviation TI-83Technically, the standard deviation is defined as the square root of the variance. But where the standard deviation comes in handy is when it is used to describe part of a distribution. Standard deviations give us an idea of how much data is contained within a certain area of a distribution curve. This information is especially useful when using normal distributions. You can find the standard deviation by hand (see: How to Find the Sample Variance and Standard Deviation), but that involves some lengthy calculations, especially if you have a large data set. A much faster way is to use the TI 83 calculator.

Standard Deviation TI-83 Calculator: Steps

Sample problem: Find the standard deviation for the heights of the top 12 buildings in London, England. The heights, (in feet) are: 800, 720, 655, 655, 625, 600, 590, 529, 513, 502, 502, 502.

Step 1: Enter the above data into a list. Press the STAT button and then press ENTER. Enter the first number (800), and then press ENTER. Continue entering numbers, pressing ENTER after each entry.

Step 2: Press STAT.

Step 3: Press the right arrow button (the arrow keys are located at the top right of the keypad) to select Calc.

Step 4: Press ENTER to highlight 1-Var Stats.

Step 5: Press ENTER again to bring up a list of stats. The standard deviation (Sx) for the above list of data is 96.57 feet (rounded to 2 decimal places).

That’s how to find the standard deviation ti-83!

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Standard Deviation TI-83 Calculator: Easy Steps was last modified: September 7th, 2015 by Stephanie

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