Statistics and Probability: JEE Main 2024 Mathematics question

JEE Main 2024 · 29 Jan, Evening shift · Q5493

JEE Main 202429 Jan, Evening shiftMathematicsMediumStatistics and Probability258× since 2002

If the mean and variance of five observations are

\frac{24}{5}

and

\frac{194}{25}

respectively and the mean of the first four observations is

\frac{7}{2}

, then the variance of the first four observations in equal to

JEE Main 2024 · 29 Jan, Evening shift · Q5493

JEE Main 202429 Jan, Evening shiftMathematicsMediumStatistics and Probability258× since 2002

If the mean and variance of five observations are

\frac{24}{5}

and

\frac{194}{25}

respectively and the mean of the first four observations is

\frac{7}{2}

, then the variance of the first four observations in equal to

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