1.A data consists of nnn observations: x1,x2,…,xnx_1, x_2, \ldots, x_nx1,x2,…,xn. If ∑i=1n(xi+1)2=11n\sum_{i=1}^{n}(x_i+1)^2 = 11n∑i=1n(xi+1)2=11n and ∑i=1n(xi−1)2=7n\sum_{i=1}^{n}(x_i-1)^2 = 7n∑i=1n(xi−1)2=7n, then the variance of this data isa.5b.8c.6d.7Login to continueOnly logged in users canattempt or see the solution.
