If the mean of the data: 7, 8, 9, 7, 8, 7, λ, 8 is 8, then the variance of this data is:

Statistics and Probability: JEE Main 2018 Mathematics question

JEE Main 2018 · 15 Apr, Evening shift · Q5437

JEE Main 201815 Apr, Evening shiftMathematicsMediumStatistics and Probability258× since 2002

If the mean of the data : 7, 8, 9, 7, 8, 7,

\lambda

, 8 is 8, then the variance of this data is :

JEE Main 2018 · 15 Apr, Evening shift · Q5437

JEE Main 201815 Apr, Evening shiftMathematicsMediumStatistics and Probability258× since 2002

If the mean of the data : 7, 8, 9, 7, 8, 7,

\lambda

, 8 is 8, then the variance of this data is :