The following marks were obtained by candidates in an examination (no fractions of a mark were awarded): Marks Number of candidates 0-5 2 6-10 8 11-15 20 16-20 30 21-25 50 26-30 80 120 31-35 36-40 150 200 41-45 46-50 220 280 51-55 56-60 320 .61-65 260 66-70 160 71-75 120 76-80 100 60 81-85 86-90 40 91-95 17 96-100 3 Total 2240 2. If the examining body wished to pass only one-third of the candidates, what should the pass mark be? 3. Compute the measures of central tendency and comment on each of them. 4. By computing the appropriate measures comment on the normality of the distribution.

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