The scatterplot below shows the number of weeks that students have been in keyboarding class and the number of mistakes that they made on a keyboarding test. A graph titled Keyboarding mistakes has number of weeks in class on the x-axis and number of mistakes on the y-axis. Points are grouped together and decrease.

Which statement about the scatterplot is true?
As the number of weeks in class increases, the number of keyboarding mistakes decreases.
As the number of weeks in class increases, the number of keyboarding mistakes increases.
Regardless of the number of weeks in class, the number of keyboarding mistakes does not change.
In general, decreased keyboarding mistakes do not affect the number of weeks in class