Question about Texas Instruments TI-30XA Calculator

"x bar" returns the mean of a series of numbers entered in "statistical mode".

e.g.enter 3, then press the "sigma plus" key (just above the "STO" key. Display will show "n = 1" and "STAT" will display to remind you that you are in statistical mode.

Enter 3 the "sigma plus" and you will see "n = 2" to tell you that you have entered two numbers. Keep doing this for a few more, then press "2nd x bar" and you will see the mean of all the numbers you entered, which is 3 if you entered all 3's.

To exit "STAT" mode, you have to press "2nd" then "CSR" (just above the 7 key), since the regular "clear" key only clears the pending entry.

Lots of simple statistical stuff you can do on the TI-30XA, read the guide book, available online at TI if you don't have one

Posted on Dec 31, 2008

Can you use the 10^x button and put in the number with the bar sign or ANS on some scientific calculators?

Good luck,

Paul

Good luck,

Paul

Sep 29, 2015 | Scientific Calculator Calculators

Be careful what you say. There is no such thing as an absolute bar. There is a function called the absolute value. To represent it one uses two vertical bars (pipe symbols) '-13' =13,

**'a-b'= a-b **if** a-b>0, **

and

'a-b'=-(a-b)if **a-b<0**

and

'a-b'=-(a-b)

Feb 26, 2014 | Casio fx-300ES Calculator

You might need a different outlet for that now. Or unplug it and let it sit for a hour then try to plug it back in.

Dec 30, 2012 | Canon MP11DX Two-Color Printing Desktop...

One psi is approximately 0.068948 bar. Conversely, one bar is approximately 14.504 psi.

To convert from psi to bar, multiply by 0.068948 or divide by 14.504 .

To convert from psi to bar, multiply by 0.068948 or divide by 14.504 .

Jul 20, 2011 | Calculators

I remember this happening once to my TI-83. I know it's a different calculator. But it happened frequently. Without completely reconfiguring the calculator, you can remove the batteries whenever you see the message and when you start it up again, it should be okay. It may continue to display this message once in a while. I used to just remove the batteries. I don't know if it will work on your TI-84 the way it worked on my TI-83, but I hope this helped!

Please rate my solution!

- Frankie

Please rate my solution!

- Frankie

May 05, 2011 | Texas Instruments TI-84 Plus Calculator

To enter the fraction two-thirds (2/3), first enter the number two. Then press the key that is the letter n with a bar underneath it. This will designate the 2 as the numerator of the fraction. Then, enter the number 3 followed by the key that is the letter d with a bar over it. That designates the 3 as the denominator of the fraction.

Any fraction can be inputted in the same manner. First the numerator followed by the n with a bar under it, then the denominator followed by the d with the bar over it. Once your fraction is inputted, continue with your computations as normal.

Any fraction can be inputted in the same manner. First the numerator followed by the n with a bar under it, then the denominator followed by the d with the bar over it. Once your fraction is inputted, continue with your computations as normal.

Apr 07, 2011 | Texas Instruments TI-15 Calculator

pdgroot11,

Press Mode. Arrow down 8 times and, select MATHPRINT by pressing [ENTER]. Then press [2nd] [Quit]. Now the fraction bar should display the way you want it.

Press Mode. Arrow down 8 times and, select MATHPRINT by pressing [ENTER]. Then press [2nd] [Quit]. Now the fraction bar should display the way you want it.

Jan 22, 2011 | Texas Instruments TI-84 Plus Calculator

Set the calculator's Input/Output Mode to MthIO. In that mode the key that is marked with the icon of a fraction ( a bar, two rectangles, one above the bar, the second below it) will display the template of a fraction. You are supposed to enter the numerator in the upper rectangle, and the denominator in the lower rectangle.

Jan 11, 2011 | Casio FX-115ES Scientific Calculator

Enter 1 then press the (SIGMA)+ button (SIGMA) looks like a sideways capital M ....its a Greek letter.

Then enter 2 and press the (SIGMA)+ button

Then enter the next value and press the (SIGMA)+ button

After you press the (SIGMA)+ button the calculator displays the number of numbers you have entered

Once all numbers of your sample have been entered press 2nd and the button corresponding to x-bar

sample st. dev is the (sigma)n-1 button (need to use 2nd button)

variance is (std. dev.)^2

population st. dev is the (sigma)n-1 button (need to use 2nd button)

variance is (std. dev.)^2

Then enter 2 and press the (SIGMA)+ button

Then enter the next value and press the (SIGMA)+ button

After you press the (SIGMA)+ button the calculator displays the number of numbers you have entered

Once all numbers of your sample have been entered press 2nd and the button corresponding to x-bar

sample st. dev is the (sigma)n-1 button (need to use 2nd button)

variance is (std. dev.)^2

population st. dev is the (sigma)n-1 button (need to use 2nd button)

variance is (std. dev.)^2

Jan 18, 2008 | Texas Instruments TI-30XA Calculator

139 people viewed this question

Usually answered in minutes!

×