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Suppose a population A has 100 observations 101, 102, .., 200 and another population B has 100 observations 151, 152,..,250. If represent the variances of the two populations, respectively, then is equal to
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Question 1
The mean and standard deviation of five observations and are 10 and 3 respectively, then variance of the observation is equal to (a) 437.5 (b) 507.5 (c) 537.5 (d) 487.5Question 2
Find the mean of the following frequency distribution:Classes: 0-20 20-40 40-60 60-80 80-100Frequency: 15 18 21 29 17Question Text | Suppose a population A has 100 observations 101, 102, .., 200 and another population B has 100 observations 151, 152,..,250. If represent the variances of the two populations, respectively, then is equal to |