Question about Texas Instruments TI 30XIIS Scientific Calculator

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I am trying to find the variance can this be found with the TI-30X II S I have the Texas Instruments TI-30 X II S on solar batteries, it has 2nd function but i am not sure how to find the summation for calculation of the standard deviation

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There is a quick guide here which should help http://education.ti.com/downloads/guidebooks/scientific/30xii/30xiiqrg-eng.pdf
So you press 2nd Function , select 1-Var or 2-Var (for paired datat) then enter your data pressing down arrow after each and Enter to finish then press STAT / VAR to see the various variables

Please give me a thumbs up if this helped

Posted on Mar 19, 2011

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1 Answer

How do i charge my TI-30X IIS calculator


You don't. The 30X IIs runs on both solar power and a 2025 lithium battery. If you need to replace the 2025 battery, see this.

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How do I convert from decimals to fraction with my TI-30X IIS calculator? I need the step by step process


The following examples will demonstrate how to convert decimals into fractions using the TI-30Xa and TI-30Xa Solar. Please be aware that TI-30Xa Solar School Edition calculators do not have this functionality.

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TI-30x How do I use the nCr function?


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I'm trying to find the cube root of 64 on my TI-30x ii s. I'm just trying to find out how to enter the root on the calculator


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How to do nPr or nCr on TI-30x Solar (scientific calc.)


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This took me forever to find out, so hopefully it will help someone!

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1 Answer

What do I press to turn off the TI-30IIS? Thank you in advance.


Hello,
Press [2nd][OFF] to turn it off. If it is the solar version, just cover the face of calculator with the slide cover.
Hope it helps.

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1 Answer

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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