MathematicsMedium89×since 2002Q5456Let x_i (1 ≤\le≤ i ≤\le≤ 10) be ten observations of a random variable X. If ∑i=110(xi−p)=3\sum\limits_{i = 1}^{10} {\left( {{x_i} - p} \right)} = 3i=1∑10(xi−p)=3 and ∑i=110(xi−p)2=9\sum\limits_{i = 1}^{10} {{{\left( {{x_i} - p} \right)}^2}} = 9i=1∑10(xi−p)2=9 where 0 ≠\ne= p ∈\in∈ R, then the standard deviation of these observations is :A710{7 \over {10}}107B910{9 \over {10}}109C45{4 \over 5}54D35\sqrt {{3 \over 5}}53Check answerSkip