Let the observations x_i (1 i 10) satisfy the equations, _ i=1 ^ 10 (x_i-5)=10 and _ i=1 ^ 10 (x_i-5)^2=40....

Question

Let the observations x_i (1 i 10) satisfy the equations, _ i=1 ^ 10 (x_i-5)=10 and _ i=1 ^ 10 (x_i-5)^2=40. If and are the mean and the variance of the observations, x_1-3, x_2-3, , x_ 10 -3, then the ordered pair ( , ) is equal to

Accepted Answer

(C)

JEE Main 2020 Mathematics question

Solution