A scatterplot is produced to compare the number of hours that students study to their test scores. There are 25 data points, each representing a different student. The scatterplot shows a grouping of points rising from left to right. Which statement could be true?
Answer
A
There is no relationship between the number of hours that students study and their test scores because the scatterplot does not have a cluster.
B
The number of hours that students study is equal to the test scores because the scatterplot does not show a cluster.
C
As the number of hours of studying increases, test scores increase because the scatterplot has a cluster that increases from left to right.
D
As the number of hours of studying increases, test scores decrease because the scatterplot has a cluster that increases from left to right.
Explanation
A grouping of points that rises from left to right shows a positive relationship: students who study more tend to have higher test scores. Therefore, the statement that test scores increase as study hours increase could be true. A downward trend would indicate a negative relationship, and the scatterplot need not show whether the two quantities are equal.
AI-written and checked against the verified answer.