A correlation is considered to be negative if: there is no ...

[BRWH]

A correlation is considered to be negative if:
 
  there is no instance of a positive correlation.
  both variables increase or decrease together.
  one variable increases while the other variable decreases.
  no connection between the two variables is seen.

Question 2

A correlation is considered to be zero if:
 
  one variable increases while the other decreases.
  there is no instance of a negative correlation.
  both variables increase together.
  no connection between the variables is seen.

[johnharpe]

Answer to Question 1

one variable increases while the other variable decreases.

Answer to Question 2

no connection between the variables is seen.

[BRWH]

Excellent

[hramirez205]

Great answer, keep it coming