the graph above shows the cumulative frequency curve of the distribution of marks in a class test. What percentage of the students scored more than 20 marks?
A.
68%
B.
28%
C.
17%
D.
8%
Correct Answer: 28%
Explanation
% of students scoring more than 20 marks
=
7/25 x 100% = 28%
% of students scoring more than 20 marks
=
7/25 x 100% = 28%