42, 65, 53, 75, 43, 50, 68, 57, 79, 48, 51, 61, 55, 70, 64. Find the median marks of all 18
students
13. The mean daily sale of a company is 126.2 units. The sales on 10 days after adopting a new
advertising strategy are as follows : 156, 125, 162, 153, 130, 124, 127, 142, 149, 121. Can we say
that mean sale has increased by new advertising strategy?
Section 2
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the answer is in ur NCERT textbook example
see clearly
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