Match the term with the scenario that it best describes:

1) In her study on the relationship between caffeine consumption and work productivity, a researcher concludes that as the amount of caffeine consumption increases, so too does work productivity. However, she also notes that one can consume caffeine to the point where it starts to harm work productivity. --

2) A recent article in the New Yorker magazine discussed the phenomenon where Olympic sprinters perform better than they usually do in their first heat of the day compared to the rest of the heats they complete that day.

3) -- A music teacher is interested in whether his students will show greater improvement if they practice the same amount of hours each week, but practice for a bit of time each day, practice for a bit of time every other day, or complete their week's worth of practice in a single day.

4) -- A researcher has developed a model that predicts how fast someone can tie their shoe from how many words per minute they can type without error. However, when he collects another sample of data and applies his model, he notices that there is usually a large difference between the observed score and the predicted score of his modelling equation.

5) -- An extremely helpful ice cream shop worker notes to his boss during springtime that as the days get warmer the more customers the shop receives. --

6) That same extremely helpful ice cream shop worker also notes to his boss that as the number of customers has increased, the proportion of fruit toppings relative to candy toppings as not changed.

1. Linear Relationship

2. Curvellinear Relationship

3. Residual

4. No Relationship

5. Analaysis of Variance

6. Regression to the mean