Question at position 62 Professor Jordan has suggested to his students that a strong relationship exists between the number of hours they spend studying and their grade on the final exam. He would like his students to improve their test scores by increasing the time they spend studying. The professor is describing amean score.negative correlation.positive correlation.standard deviation.

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BlackTom AI · Accepted Answer

The question describes a scenario where increasing study hours is associated with higher final exam grades. This points toward understanding the relationship between two quantitative variables: hours studied and exam grade.
Option 1: mean score. This term refers to the average grade itself, not a relationship between two variables. It does not describe how one variable changes in relation to another, so it does not fit the scenario.
Option 2: negative correlation. A negative correlation would imply that as study hours increase, grades decrease. That contradicts the professor’s suggestion that more study leads to better scores, so this choice is inconsistent with the described relationship.
Option 3: positive correlation. A positive correlation indicates that as one variable increases (hours studied), the other variable also tends to increase (final exam grade). This aligns with the professor’s claim and the described pattern of improvement with more study time.
Option 4: standard deviation. Standard deviation measures the spread or variability of a single set of values, not the relationship between two variables. It does not capture whether studying more is associated with higher grades, so this option does not describe the described relationship.
In summary, the only option that matches the idea of a relationship where increased study time is associated with higher grades is the positive correlation, since it describes a consistent, upward association between the two variables.

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