1. September 11, 2012

2.  A relationship refers to the correspondence between two variables.variables  two ways to view the relationship: the nature of the relationship or the pattern of it.

3.  Some pairs of variables are related positively. This means that as one variable goes up, the other tends to go up as well.  For example, height and weight are positively related because taller people tend to be heavier.

5.  Also known as an inverse relationship  negatively related, which means that as one goes down the other tends to go up.  y, decreases as another, say x, increases.  For example, gas mileage and the weight of a car are negatively related, because heavier cars tend to get lower mileage.gas mileage

7.  no pattern  scattered  This means the two are not related.

8.  Size shoe a baseball player wears and their batting average  Not related because the shoe size does not make the player better or worse, then are not related.

9.  Two variables may be related linearly. This means that a straight line can represent their relationship.  For example, the amount of paint needed to paint a wall is linearly related to the area of the wall.

10.  nonlinear:relationships cannot be represented by a straight line.