Most likely, it means Standard Deviation. which is used in analyzing a set of data. See related link.
* * * * *
The Casio range, popular with GCSE and A level students in the UK, has a button marked S<=>D. This is a toggle between decimal (D) and standard (S) form (fraction, pi).
Chat with our AI personalities
Press the simplify button.
Yx
If you have Windows 7, as do I, then change the calculator to scientific mode, and there is a cube roots button, type in the number you want, and hit that button. If you are talking about a standard handheld calculator, most don't have it, but the TI scientific ones do!
that maces no sens
The button will have yx on it.