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JEE Main & Advanced Mathematics Statistics Question Bank Numerical Value Type Questions - Statistics

  • question_answer
    A data consists of n observations: \[{{x}_{1}},{{x}_{2}},.....,{{x}_{n}}.\] If \[\sum\limits_{i=1}^{n}{{{({{x}_{i}}+1)}^{2}}=9n}\] and \[\sum\limits_{i=1}^{n}{{{({{x}_{i}}-1)}^{2}}=5n}\] and the standard deviation of this data is \[\sqrt{a},\] then a is

    Answer:

    5


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