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[" dents is: "],[[" (A) "16," (C) "22],[" (C) "22," (D) "18],[" 4) "A_(x)," (B) "x_(2)" .".........,x_(n)" .If "sum_(i=1)^(n)(x_(1)+1)^(2)=9n" and "],[sum_(1-1)^(n)(x_(1)-1)^(2)=5n" ,then the standard deviation "],[" of this data is "(0)," [) "" DEE Main "2019],[[" (A) "sqrt(7)," (B) "2,cos theta-2],[" (C) "5," (D) "sqrt(5),sum_(i=1)^(n)x_(1)^(prime)=n]]]

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