Question

ch 4 does exposure to classical music (through instrument lessons or concert attendance) improve childrens scholastic performance? in a study, researchers measured the amount of exposure to classical music for many children, along with their scores on the states academic proficiency exam. the explanatory variable in this study is: the childs score on the states proficiency exam. the type of instrument a child plays. the amount of a childs exposure to classical music. whether a child passed the states proficiency exam. question 5 1 pts ch 1 which graph is used to examine the correlation between two quantitative variables? scatterplot line plot stem-land-leaf plot dot plot

Explanation:

• For the first question: An explanatory variable is the one that is manipulated or measured to see its effect on the response variable. Here, the amount of exposure to classical music is what researchers are looking at to see its impact on academic performance (the response variable).
• For the second question: A scatterplot is specifically designed to show the relationship (correlation) between two quantitative variables. Each point on the scatterplot represents a pair of values for the two variables.

Answer:

• First question: the amount of a child's exposure to classical music.
• Second question: scatterplot.