Question

What is the best information that can be gathered from the scatter plot below?

The scatter plot titled 'Vocabulary levels and reading frequency' showing Reading frequency in hours per week from 0 to 10 along the x-axis and vocabulary levels from 0 to 10 along the y axis, is shown with 26 data points showing a strong positive relationship. The x-values of the data points extend from 0 to 10, and the y-values of the data points extend from 9 to 0.
A.
Students, who read often, like vocabulary.

B.
Students at high vocabulary levels tend to read the same amount of books as students at a low vocabulary level.

C.
Students who read more frequently tend to achieve higher vocabulary levels.

D.
No relationship can be found between vocabulary levels and reading frequency.

Answer 1

C

The scatterplot shows a strong positive correlation: as reading frequency (hours/week) increases, vocabulary levels tend to be higher. (This indicates association, not proof of causation.)