A.3.8.3 Correlation Zoo
For each of the situations below, describe the relationship between the variables, based on the correlation coefficient. Make sure to mention whether there is a strong relationship or not, as well as whether it is a positive relationship or negative relationship.
Use these sentence frames: (choose or fill in underlined portions)
There is a strong/weak positive/negative relationship because r is close/far from 1/-1. An increase in (x-value) tends to go along with an increase/decrease in (y-value).
Temperature of a rubber band and distance the rubber band can stretch. r = 0.84
Average time spent listening to music per day and average time spent watching TV per day. r = -0.17
Average fat intake per citizen of a country and average cancer rate of a country. r = 0.73