Description

Correlation means that there is a relationship between two or more variables (such as ice cream

consumption and crime), but this relationship does not necessarily imply cause and effect.

Correlations Practice

For each of the correlational studies described below, decide whether the correlation is positive or negative and give an alternative explanations for each finding. In other words, if the one variable didn’t cause the other, what OTHER Variable (Variable C) could have caused them both? THINK…

1. A study of married couples showed that the longer they had been married, the more similar their opinions on social and political issues were.

Positive or negative?

Alternate Explanation :

2. An intelligence test was given to all the children in an orphanage. The results showed that the longer children had lived in the orphanage, the lower their IQ scores.

Positive or negative?

Alternate Explanation :

3. A college professor found that the more class absences students have, the lower their grade in the course tends to be.

Positive or negative?

Alternate Explanation :

4. It was found that elementary-school children who made high scores on a vocabulary test also tended to make high scores on a test of physical strength and muscular coordination.

Positive or negative?

Alternate Explanation :