AP Statistics Question (This was on one of my class tests)

albert87
Fri, 09 Feb 2007 08:33:46 +0000

its just zero, there’s no working to be done cause this tests you on your understanding of a basic concept

there are three types of correlation: negative, positive, zero

it makes sense that in this question, it is zero. zero correlation means that independent variable X doesn’t affect dependent Variable Y in any way. As X increases, Y remains the same. As X decreases, Y is still the same. So zero correlation.

positive correlation when you get a line with positive gradient. this is the case when as your X increases, your Y increases. As X decreases, Y decreases.

negative correlation when you get a line with a negative gradient. X increases, Y decreases, vice versa

hope that helped :)