Math Chapter Wise question with answer

Q01 The variance of first n natural numbers is: English · UKPSC Lecturer (Mains) 2020 Q02 If Σ Σ Σƒ ƒ ƒi xi = 3100, Σ Σ Σƒ ƒ ƒi (xi – x)2 = 10050 and n = 50, then the variance is: English · KVS PGT 2023 Q03 The mean of 5 observations is 4 and their variance is 5.2. If three of those observations are 1, 2 and 6 the other... English · KVS PGT 2023 Q04 The variance of the observations 13, 17, 10, 20, 16 and 14 is: English · NVS PGT 2022 Q05 Numbers 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10 are given. If 2 is added to each number, the variance of the number will b... English · KVS PGT 2022 Q06 If m is the mean of a Poisson distribution, then variance is: English · KVS PGT 2022