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...

Assessment: JAMB UTME - Mathematics - 2004 Subject: General Mathematics

Question 1 Report

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?

Answer Details
class-marks(x) (freq. (f) cum. freq. 9 3.....3 14 6....3 + 6 = 9 19 9.....9 + 9 = 18 24 3.....18 + 3 = 21 29 2.....21 + 2 = 23 34 2.....23 + 2 = 25 25
% of students scoring more than 20 marks

=  7 25  x 100% = 28%

Read lesson note on Percentages (WAEC)
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