Question about Texas Instruments TI-85 Calculator

# TI-85 functions I would like to know how to find the mean and also the standard deviation on the TI-85 calculator. Thank-you

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## 1 Answer

### Anonymous try [stat]

Posted on Jan 24, 2008

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### How to calculate standard deviation

Hi there,

My name is adieh. Hav a great day.

Here are the tips on how to calculate standard deviation using a graphic calculator:

1. Turn on your graphing calculator, go to the stats/editor screen and enter your data set into list1. Once this is done, return to your home page by hitting the home button.

2. Push the catalog button and scroll through the applications until you find "stdDev(". Place the arrow next to it and press enter.

3.Type the word "list1" into the open parenthesis. After you have put that in, close the parenthesis so you calculator doesn't show an error message.

4. Press the enter button. The calculator has done the calculations and you now have the standard deviation of your data set.

Note:
Using 1-var stats in the stats/editor screen will also give you the standard deviation. Using that function will also give you other information associated with your data set.

Hope it helps.

Thank you for using fixya.

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### 2nd vars 2 (normalcdf( -999999,-.1923) Just trying to get area from z value -.0.1923 keep getting errors

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### How to solve mean, variance and standard deviation on the ti 83

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### Error 23 stat

Quoting from page B-7 of the Guidebook:

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You are attempting a stat calculation with lists that are not appropriate; for example, you are requesting a statistical analysis with fewer than two statistical data points. The frequency (y value) for a 1-VAR analysis must be an integer >= 0.
------

If you simply want 1-variable statistics for two sets of data, you'll have to calculate them separately.
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### If both tests are graed on a curve, who did better and why?

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### Standard deviation and mean

how can i find out what all the buttons mean
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### Standard deviation Enter the first number, 1. Hit the σ+ (Sigma+) key. ( n=1 will appear in the window) Enter the second number, 1. Hit the σ+ (Sigma+) key. (n=2 will appear in the window) . . . . . Enter the last number, 7. Hit the σ+ (Sigma+) key. (n=7 will appear in the window) Hit 2nd x2 (by hitting the 2nd key you are actually selecting the x-bar written above the key.) This gives you the mean. Hit 2nd sqrt(x). This gives you the sample standard deviation which we will use in class. Make sure you turn your calculator off and on for new data sets.
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### Standard Deviation

Texas Instruments TI-86 Statistics How-To Information The following instructions should allow you to calculate the mean and standard deviation using a TI-86 calculator.
1. Press STAT
2. Select EDIT
3. Enter data into a list: [2.32 ENTER 2.43 ENTER 2.39 ENTER, etc.] Continue until all data have been entered. (use arrows keys to go to the y value, if any)
4. EXIT until you reach the main ("blank") screen. (If you try to calculate while you're in the data menu, it thinks you're still trying to enter data!)
5. Press STAT
6. Select CALC
7. Select OneVa
8. Select LIST, NAMES, xStat(F2), Press ENTER
9. The calculator provides Max, Min, Mean, Standard Deviation, Sum, Sigma, etc. You will be primarily interested in the Mean and Standard Deviation (sx).

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