My ti 84 keeps giving me the wrong answer for standard deviation

SOURCE: Standard Deviation

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).

SOURCE: ti 84 is giving me the wrong answer. it show e

Possibly beacuse the settings are different try changing it back so the settings on the mode that are on the left hand side except for the clock to be all highlighted.

SOURCE: My TI-84 Plus gives answer as 2.145274703E14, what Is E?

E is the calculators form of scientific notation. so 2.145274703E14
is really 2.145274703 x 10^14 or 214527470300000

SOURCE: finding standard deviation on Ti-30XA calculator

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

It's straight forward to follow.

SOURCE: wrong trig ratio

Your calculator is set in radians. Press mode key. Arrow down to 3rd line. Highlight degree and press enter. Your calculator is now in degrees, not radians. To get out of the mode screen and back to home screen, press 2nd and then mode.