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1. If the mean of 12 observations is 36. then the sum of 12 observations is(A) 12(B) 432(C) 36(D) 1442.The purpose of organization of data isi) To obtain any kind of inferences from the dataii) To get quick and overall view of dataiii) To make the task very tedious and complexiv) To take decisions accordingly(A) (ii), (ii) are true(B) (i), (ii), (iv) are only true(C) (i), (iii) are true(D) (i), (iv) are only true3. In a data, if the first two items are increased by 5 and the last two items are decreased by5, then their mean value(A) Increased by 5(B) Decreased by 5(C) Zero(D) Remains the same |
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Answer» 1) the answer is (C) 3)the answer is (C) |
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