The following is a record of scores obtained by 30 JSS form 2 pupils in a test marked out of 5.

$\table 5,3,2,4,5,2,;4,3,1,1,3,3,;4,2,3,4,5,3,;4,3,2,4,3,1,;2,2,3,3,2,4;$

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a)Copy and complete the table.

b)Find the mean of the distribution.

c)If a pupil is selected at random from the form, what is the probability that he / she scored 4 marks ?