If the mean and variance of the following data : 6, 10, 7, 13, a, 12, b, 12 are 9 and … respectively, then (a … b)² is equal to :

Statistics

JEE Main 2021 · 27 Jul, Morning shift · Q5467

MathematicsMedium89×since 2002Q5467

If the mean and variance of the following data : 6, 10, 7, 13, a, 12, b, 12 are 9 and

{{37} \over 4}

respectively, then (a

-

b)² is equal to :

JEE Main 2021 · 27 Jul, Morning shift · Q5467

MathematicsMedium89×since 2002Q5467

If the mean and variance of the following data : 6, 10, 7, 13, a, 12, b, 12 are 9 and

{{37} \over 4}

respectively, then (a

-

b)² is equal to :