This video is part of the Further Maths Units 3 and 4 course and looks at the data analysis component. One of the most interesting parts of this course is about correlation and causation. Does a correlation between two variables mean that one always causes the other? Well, it appears not! This video looks at the three ways two variables can be related. Coincidence, confounding variables and common response. Examples are given and some VCAA questions are answered at the end of the video.