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Mathematics
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OpenStudy (anonymous):
http://imageshack.us/photo/my-images/502/12698272.jpg/ This is a cumulative frequency graph which is in link. From the graph I managed to estimate the median mark,the inter-quartile range and the passing mark if three-fifths of the students passed. But I couldn't find the number of students achieving more than 0 marks. Median mark=32 Inter-quartile range= 15 Pass mark if three-fifths of the students passed=28 The number of students achieving more than o marks= ??
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