In general, a positive correlation means that as the values of one variable _____, there is a ...

In general, a positive correlation means that as the values of one variable _____, there is a tendency for the values of the other variable to _____.
 
  a. increase; increase c. increase; remain the same
  b. increase; decrease d. decrease; increase

Question 2

The best-fitting line through a scatterplot is known as the
 
  a. scatterplot line. c. variance line.
  b. correlation line. d. regression line.

Question 3

To know whether there is a relationship between two variables, you draw a line around the outer edges of a scatterplot. If there is a negative relationship,
 
  a. the scatterplot is simultaneously elliptical and circular.
  b. the scatterplot is elliptical and is slanted upward (left to right).
  c. the scatterplot is elliptical and is slanted downward (left to right).
  d. the scatterplot is either circular or elliptical, and the ellipse is parallel to the X axis.