For a data consisting of 15 observations x_1 , i = 1 , 2 , 3 , ... , 15 the following results are obtained: \sum^{15}_{i=1} x_i = 170 ; \sum^{15}_{i=1} x_i^2 = 2830. If one of the observation namely 20 was found wrong and was replaced by its collect value 30. then the corrected variance is

AP EAMCET Engineering 21 Apr 2019 Shift 1 Paper

Section: Mathematics

Question : 35 of 160

Marks: +1, -0

For a data consisting of 15 observations x1 , i = 1 , 2 , 3 , ... , 15 the following results are obtained:

i=1

xi = 170 ;

i=1

xi2 = 2830. If one of the observation namely 20 was found wrong and was replaced by its collect value 30. then the corrected variance is

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