The weight of the tube and the speed of the waterslide.
(One thing increases the other increases)
Negative Correlation:
The number of hours she sleeps at night and the length of her nap.
(As one thing decreases the other increases.)
No Correlation:
The the number of siblings you have and your favorite number.
(No relation)
Mine is 1 and 13 because I know you wanted to know.
In the comments, give me two things that are positively correlated or negatively correlated.