Which of the following data sets indicates a strong negative correlation?

{(-3, 8), (-2, -6), (-1, 4), (0, -2)}
{(-2, -4), (0, -2), (2, 0), (4, 2)}
{(-2, 4), (-1, 2), (0, 0), (1, -2)

Question

Which of the following data sets indicates a strong negative correlation?



{(-3, 8), (-2, -6), (-1, 4), (0, -2)}
{(-2, -4), (0, -2), (2, 0), (4, 2)}
{(-2, 4), (-1, 2), (0, 0), (1, -2)

jim766 · Answer

take a look at the 3rd one...
notice how as the x's go up
 the y's go down by the same amount each time....
      x      y
    -2      4
    -1      2
     0       0
     1      -2

this is a strong negative correlation

jim766 · Answer

notice how the y's of the others go up and down as the x's change