The table below shows the mark distribution of candidates in an aptitude test for selection into the public service.



Marks (in %)
Freq


44 - 46
2


47 - 49
5


50 - 52
11


53 - 55
20


56 - 61
42


62 - 64
46


65 - 67
36


68 - 70
9


71 - 73
3



(a) Make a cumulative frequency for the distribution
(b) Draw the cumulative frequency curve.
(c) From your graph, estimate the median mark.
(d) The cut-off mark was 63%. What percentage of the candidates was selected?


The table below shows the mark distribution of candidates in an aptitude test for selection into the public service.



Marks (in %)
Freq


44 - 46
2


47 - 49
5


50 - 52
11


53 - 55
20


56 - 61
42


62 - 64
46


65 - 67
36


68 - 70
9


71 - 73
3
