Question

solve each of the problems below. be sure to ask questions if you need more help with a topic.
i can describe patterns of association for bivariate data.

1. describe the type of association youd expect to see between the following variables. explain your choices.

a. the length of a movie and the number of actors in the movie
b. the number of hours a musician spends practicing and the number of mistakes the musician makes in a performance

Explanation:

For part a: The length of a movie and the number of actors in the movie. There is likely no association. The length of a movie is determined by factors like the story - telling, editing, etc., and not directly by the number of actors. An actor - heavy movie could be long (if there are many sub - plots for each actor) or short (if it's an ensemble piece with quick scenes for each actor). Also, a movie with few actors could be long (a character - driven slow - paced movie) or short (a simple two - character drama).
For part b: The number of hours a musician spends practicing and the number of mistakes in a performance. There is a negative association. As a musician practices more hours, they are likely to become more proficient, which would lead to fewer mistakes in a performance.

Answer:

a. No association.
b. Negative association.