How can I unlock an iPhone without knowing the Apple ID or password?
Yes, you can. You don’t need the password
Is there a way to install iOS 6 back after you upgrade an iPhone to iOS 7?
If you still have the old iOS 6 package file together with your last iOS 6 backup on iTunes, you can try restore your phone by holding the option key and press Restore iPhone button on iTunes. However, even if this works, why would you do that? The looks of iOS 7 is probably annoyingly unfamiliar at first but, let's face it, on one super busy day we will probably find ourselves get used to it. The main thing is that all iTunes Store apps will (be forced to) adopt the iOS 7 cues and update new features based on that from this point on. Why would you want to miss important new features and bug fixes, especially with your favorite purchased apps?
How do you type or get the standard deviation symbol in MS Word?
Type 03C3 then pres Alt-X.The σ character (Greek sigma) is the symbol for standard deviation, and is entered as Unicode 03C3. The Alt-X keystroke interprets the preceding 4 characters as the equivalent Unicode symbol. Refer to this handy Unicode reference list: https://en.wikibooks.org/wiki/Un...