Math Chapter Wise question with answer

Q01 If the sum of the deviations of 50 observations from 30 is 50, then the mean of these observations is: English · EMRS PGT-2023 Q02 In a class test in mathematics, 7 students obtained 10, 45, 35, 43, 25, 46, 15 marks. The mean deviation from the m... English · KVS PGT 2023 Q03 The algebraic sum of deviations of 25 observations from 18 is 75, then mean of observations is: English · KVS PGT 2023 Q04 If the algebraic Sum of the deviations of 10 observations measured from 15 is 7, then mean is English · UP TGT-2016 (08-03-2019) Q05 The mean deviation from the mean of the 2n observations a, a+d, a+2d,..., a+2nd is: English · NVS PGT 10-06-2019 Q06 If the mean deviations about the median of the numbers a, 2a, 3a,..., 50a is 50, then |a| equals: English · EMRS PGT-2023