Question about Texas Instruments TI-30XA Calculator

Finding standard deviation on Ti-30XA calculator

Could you please list the exact keys that I need to press to find standard deviation of a group of data?

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You can get instructions from;
http://www.geocities.com/calculatorhelp/ti30xa.htm

It's straight forward to follow.

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Where is s on the ti-30xa calculator

If you mean the standard deviation, there are two shifted keys on the third row marked with a lower-case Greek sigma. sigma_xn is the population standard deviation and sigma_xn-1 is the sample standard deviation.

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No. There are some keys on the TI-30XA that may make you think so, but they are statistical operations. For example, you can enter values using the Sigma+ key and the TI-30XA can give you the sum of the values entered, sum of the squares, mean value, standard deviation and so on.

You cannot do calculations like "Give me the sum of all integers from 1 to 100" with the TI-30XA, you'd need a far more sophisticated calculator.

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How do you find the standard deviation with the TI-30XA calculator? The button is on here but I don't know how to input the data...please help!

Press 2nd [CSR] to clear all statistical data. For each data point, enter the number and then press Sigma+. If you enter a wrong value, reenter the wrong value and press 2nd [Sigma-] to delete the wrong value and then enter the correct value.

Jul 02, 2010 | Texas Instruments TI-30XA Calculator

How do you find standard deviation on the calculator?

Press 2nd [CSR] (shift-7) to clear the statistical registers. Use the Sigma+ key (just above STO) to enter data points. Use 2nd [Sigma-] to remove erroneous data points. Use 2nd [sigma x n] (shift-divide) to compute the population standard deviation, or 2nd [sigma x n-1] (just to the left of the previous key) to compute the sample standard deviation.

Jun 07, 2010 | Texas Instruments TI-30XA Calculator

Does this calculator comes with a standard deviation or population standard deviation button

Yes. The sample standard deviation is 2nd [sigma x n-1] and the population standard deviation is 2nd [sigma x n].

Apr 02, 2010 | Texas Instruments TI-30XA Calculator

Finding standard deviation of samples!!

34 σ+
39 σ+
32 σ+
36 σ+
30 σ+
33 σ+
2nd ÷ (σxn)

Jun 02, 2009 | Texas Instruments TI-30XA Calculator

Standard Deviation

Press 2ND [CSR] to clear the stat data.

For each data point, enter the number followed by SIGMA+

If you have grouped data, enter the number followed by 2ND [FRQ] followed by the frequency then SIGMA+

Press 2ND [sigma x n] for the population standard deviation or 2ND [sigma x n-1] for the sample standard deviation.

May 25, 2009 | Texas Instruments TI-30X-IISTK Scientific...

Instruction booklet has key strokes and example at pages 10-11

Mar 04, 2008 | Texas Instruments TI-30XA Calculator

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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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