Answer:
A. What is the independent variable?
The independent variable in this research is "students reading an article on the growth mindset."
B. What type or category of independent variable is used?
The independent variable is a categorical independent variable as it involves two categories: students who read the article and students who did not.
C. What is the dependent variable?
The dependent variable in this research is "students' choice of enrolling in a summer Math class."
D. How many levels are there for the independent variable?
There are two levels for the independent variable: students who read the article and students who did not.
E. What is the scale of measurement for the dependent variable?
The scale of measurement for the dependent variable is not specified in the given information. It could be a binary scale (enrolled/not enrolled) or a categorical scale (enrolled in different types of Math classes), or even a continuous scale (e.g., number of students who enrolled). Without further information, it is not possible to determine the exact scale of measurement for the dependent variable.