20 !
the scatterplot shows the time that some students spent studying and the number of spelling mistakes on an essay test.

which statement about the scatterplot is true?

a..the point (8, 17) can cause the description of the data set to be overstated.
b..although (8, 17) is an extreme value, it should be part of the description of the relationship between studying time and the number of spelling mistakes.
the point (8, 17) can cause the description of the data set to be understated.
d..the point (8, 17) shows that there is no relationship between the studying time and the number of spelling mistakes.