Question about Texas Instruments TI-30XA Calculator

# Can you solve standard deviation problems on the TI-30XIIS? Also how do i solve problem for the sample standard deviation?

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• Texas Instru... Master

Hello,
Here is a screen capture from the guide. Hope it helps.

Posted on Oct 13, 2009

• k24674 Oct 21, 2009

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Hi,
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Posted on Jan 02, 2017

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## Related Questions:

### 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.

Nov 12, 2013 | Texas Instruments TI-30XA Calculator

### Which button do I use for the square root button? I have to perform math problems on... geometric mean population standard deviation sample standard deviation

The square root button is two up from the 9 key, just to the left of the divide key. To calculate the square root of 2, for example, press 2 square-root =

Jun 10, 2011 | Texas Instruments TI-30XA Calculator

### Where is the standard deviation button?

There isn't one. Press the "STAT VAR" button to bring up the statistics menu. "Sx" and "Sy" will give you the sample standard deviations, while "sigma x" and "sigma y" will give you the population standard deviations.

When I say "sigma" I mean the lower case Greek letter sigma, which looks like a lower-case "o" with a tail pointing to the right.

May 19, 2011 | Texas Instruments TI-30 XIIS Calculator

### How do I put my calculator in statistics mode?

The TI-30XA does not have to be switched to a statistics mode, the operations are available all the time. The choice of operations are somewhat limited; the calculator offers statistics functions for one dimensional data sets only (no linear interpolation of (x,y) value pairs, for example):
• [2nd] [CSR] - erase statistics data
• [] - add a number to the sample set
• [2nd] [] - remove a number from the sample set
• [2nd] [FRQ] - multiple entry of the same sample value
• [2nd] [n] - sample set size
• [2nd] [] - sum of all sample elements
• [2nd] [] - sum of the squares of all sample elements
• [2nd] [] - average of the sample set
• [2nd] [] - standard deviation (sample set is a complete set)
• [2nd] [] - standard deviation (sample set is a subset of a larger set)
The calculator displays "STAT" if the current sample set is non-empty.

Example: calculate the average and standard deviation of the set { 3, 4, 5, 5, 5, 5, 6 }.
1. [2nd] [CSR] - erase stat memory
2. 3 [] 4 [] 5 [2nd] [FRQ] 4 [] 6 [] - enter the data, note the use of [2nd] [FRQ] to enter the four occurrences of "5". Entering 5 [] four times would have done the same.
3. [2nd] [] - display the average of the set, (4.714...)
4. [2nd] [] - display the standard deviation of the set (0.8806...)

Jan 25, 2011 | 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

### How do i solve for a sample standard deviation?

35,33,32,32,31,30,30,30,30,29,29,29,28,27,27,26,26,25,24,23,23,23,23,22,21,20,19,18,17

Aug 03, 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...

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