Answer
a. The dependent variable is the number of correct answers.
b. The dependent variable is continuous - scores can range from 0 to all of them correct.
c. The dependent variable is measured on a ratio scale because there can be a true 0 (no answers correct).
Work Step by Step
a.There are 2 variables in the problem: how they read the passage and how they did on the test. Because they were randomly assigned to reading the passage, the other variable must be the dependent variable.
b. Discrete are either/or like yes/no so this must be a continuous variable.
c. To determine the scale you need to know if it's discrete or not (part b) and if it has a true 0. It has a true 0 so it is ratio.
