Question about Texas Instruments TI-30XA Calculator

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Difficulty changing to the Statistics mode

I'm trying to use the TI-30Xa calculator for solving problems for a Biostatistics class but i'm finding difficulty knowing how to change it to the statistics mode so i could calculate the mean, median, SD, etc so could you tell me how to do that ?

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Download the small instruction book from TI web site, keystrokes and examples at pages 10/11

http://education.ti.com/educationportal/downloadcenter/SoftwareList.do?website=US&tabId=2&paneId=18

Posted on Jan 01, 2009

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1 Answer

Find mean ti30xa


Clear the statistics registers with 2nd [CSR]. Add the data points with Sigma+. Errors can be corrected with 2nd [Sigma-]. Calculate the mean with 2nd [xbar].

See the example on page 11 of this guidebook.

Feb 24, 2013 | Texas Instruments TI-30XA Calculator

1 Answer

I can't seem to get my calculator into statistics mode. could you please explain it very clear. i must be mising something. i have a texas instrument calculator(Ti-30xA).thank you.


The TI-30Xa does not have a statistics mode. That statistics operations are available at all times, just like addition and subtraction. Just enter the data with Sigma-plus and then calculate the desired statistics---mean, standard deviation, and so forth.

Full details are in the "One-Variable Statistics" section of the guidebook (page 9 in my copy). If you need the guidebook, you can download one from
http://education.ti.com/calculators/downloads/US/Guidebooks/Detail?id=6132

Jun 23, 2011 | Texas Instruments TI-30XA Calculator

1 Answer

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
  • [mib8888_17.gif] - add a number to the sample set
  • [2nd] [mib8888_18.gif] - remove a number from the sample set
  • [2nd] [FRQ] - multiple entry of the same sample value
  • [2nd] [n] - sample set size
  • [2nd] [mib8888_19.gif] - sum of all sample elements
  • [2nd] [mib8888_20.gif] - sum of the squares of all sample elements
  • [2nd] [mib8888_21.gif] - average of the sample set
  • [2nd] [mib8888_22.gif] - standard deviation (sample set is a complete set)
  • [2nd] [mib8888_23.gif] - 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 [mib8888_17.gif] 4 [mib8888_17.gif] 5 [2nd] [FRQ] 4 [mib8888_17.gif] 6 [mib8888_17.gif] - enter the data, note the use of [2nd] [FRQ] to enter the four occurrences of "5". Entering 5 [mib8888_17.gif] four times would have done the same.
  3. [2nd] [mib8888_21.gif] - display the average of the set, (4.714...)
  4. [2nd] [mib8888_22.gif] - display the standard deviation of the set (0.8806...)

Jan 25, 2011 | Texas Instruments TI-30XA Calculator

1 Answer

Hod do you put this calculator into statistical mode?


The 30XA doesn't have a statistical mode; all of the statistical functions are available at all times.

2nd [CSR] clears the statistical registers, Sigma+ adds a data point, Sigma- deletes a data point, 2nd [x-bar] gives the mean, 2nd [sigma-x-n] and 2nd [sigma-x-n-minus-one] give the population and sample standard deviation.

For full details, refer to the statistics section in the manual. If you don't have a manual, you can download a guidebook from
http://education.ti.com/educationportal/sites/US/productDetail/us_ti30xa.html?bid=6

Jan 08, 2011 | Texas Instruments TI-30XA Calculator

1 Answer

How to find the mean on the calculator


Press SHIFT x^2 to use the mean function.

Refer to the "One-Variable Statistics" section in the manual (page 9).

Aug 28, 2010 | Texas Instruments TI-30XA Calculator

1 Answer

How do you change the statistical mode on a TI-30XA?


The truth of the matter is that there is no statistical mode per se. You just start entering data in a specific sequence.
If there is data in the statistics register (remnant of and old calculation) you must start by clearing old values :[2nd][CSR].
Here is a screen capture with an example that uses frequencies.

05b56ce.jpg

Aug 14, 2010 | Texas Instruments TI-30XA Calculator

1 Answer

Can I do numbers squared on this calculator, and how would I enter this?


The TI-30XA is a scientific calculator with many functions. You can calculate problems with fractions and decimals, as well as solve problems of probability and functions. A scientific calculator computes the number sentence you type in using the order of operations: parentheses first, then roots and exponents, then division and multiplication and, finally, addition and subtraction.
How to Use a TI-30XA
  • Step 1Press the [ON/C] key to turn on the calculator. Press the [OFF] key to turn it off. To use the calculator in solar mode, put the solar panel in the light and then press the [ON/C] key. To turn it off when in solar mode, slide the calculator cover back on and it will automatically shut off.
  • Step 2Replace the batteries by first removing the cover and placing it face down. Use a Phillips-head screwdriver to unscrew the back panel. Remove the back panel and change the batteries. Screw the back panel back on. Press [OFF] [ON/C] and [ON/C].
  • Aug 08, 2010 | Texas Instruments TI-30XA Calculator

    1 Answer

    I dont know how to do regression lines on my TI-30XA


    You can't, the TI-30XA is a one variable statistical calculator, so you can't do two variable statistics with it.

    You need to step up to the TI-35X or the TI-30X IIS

    Oct 02, 2008 | Texas Instruments TI-30XA Calculator

    1 Answer

    Linear regression


    I already answered a Q like this - you can't do 2 variable statistics on the TI-30XA, it only does one variable statistic.

    To do 2 variable stat like linear regression, you need the TI-36X or TI-30X IIS, or comparable HP, casio etc

    May 17, 2008 | Texas Instruments TI-30XA Calculator

    1 Answer

    Median for statistics


    The TI-30XA doesn't give the median of a sequence of entered values, just the mean, std dev, and other one variable stats

    Jan 27, 2008 | Texas Instruments TI-30XA Calculator

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