1. GENERATING Scatterplots and Correlations USING Ti84

2. plotting scatterplots using ti-84 / ti-89

4. Correlation measures the direction and strength of the linear relationship between two quantitative variables. Correlation is usually written as r

5. As always the summation sign __ means “add these terms for al the individuals,” is used in the formula for the correlation “r.” (complex formula in stats) to solve for the correlation of your data set, you will need to compute for: a) mean b) standard deviation c) z-score

6. You definitely need your calculator to compute for the correlation, which is still an arduous task to accomplish :)

7. Classifying Fossils: the length of two bones in five fossil specimens of the extinct beast ARCHAEOPTERYX: Femur3856596474 Humerus4163707284 r =.99

8. Possible correlations range from +1 to –1. A zero correlation indicates that there is no relationship between the variables. A correlation of –1 indicates a perfect negative correlation, meaning that as one variable goes up, the other goes down. A correlation of +1 indicates a perfect positive correlation, meaning that both variables move in the same direction together.