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 5...

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

(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?