The frequency distribution shows tha marks of 100 students in a Mathematics test. (a) Draw cumulative frequency curve for the distribution . (b) Use your curve to estimate : (i) the median ; (ii) the lower quartile ; (iii) the 60th percentile.

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The frequency distribution shows tha marks of 100 students in a Mathematics ...

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The frequency distribution shows tha marks of 100 students in a Mathematics test.

Marks	1-10	11-20	21-30	31-40	41-50	51-60	61-70	71-80	81-90	91-100
No. ofStudents	2	4	9	13	18	32	13	5	3	1

(a) Draw cumulative frequency curve for the distribution .
(b) Use your curve to estimate : (i) the median ; (ii) the lower quartile ; (iii) the 60th percentile.

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