The following data gives the marks obtained by students in an exam.
Class intervalFrequencyBelow 105Below 2010Below 3023Below 4031Below 5045Below 6049
(i)Convert the cumulative distribution to a regular distribution.
(ii)Calculate the mode. [3 MARKS]
Table: 1 Mark
Application: 2 Marks
Class IntervalFrequency0−10510−20520−301330−40840−501450−604
Mode
=I+(f1−f02f1−f0−f2)×h
=20+13−526−5−8×10
=26.15