Q.38 A group has arithmetic mean of 10 from 60 items with variance 4. A subgroup of 40 items has mean 11 and standard deviation 1.5. Find the mean and standard deviation of other subgroup. Ans. 8, 1.225 Q.39 The mean of 5 observations is 4.8 and variance is 4.56. If three of the five observations are 2, 5 and 6, find the other two observations

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Statements and Logic

Logic is the analysis of general patterns of thoughts without regard to any specific sense of context.