yes
No. Well above is not hyphenated.
No, well above average is not hyphenated.
It is usually seen as two words, but technically should be hyphenated as the adjective above-ground because ground is not an adjective by itself.
no
Yes it should be hyphenated.
Yes, it should be hyphenated.
Yes it should be hyphenated.
yes check-up should be hyphenated
It should be hyphenated.
Yes it should be hyphenated.
No it shouldn't be hyphenated.