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MathematicsStatisticsRelation Between Variance and Mean DeviationEasy2 minPYQ_2023

MathematicsEasysingle choice

The standard deviation of 5 scores $1, 2, 3, 4, 5$ is $a$ . The value of ' $a$ ' is

Answer:

Solution:

$Mean (\overset{x}{ˉ}) = \frac{1 + 2 + 3 + 4 + 5}{5} = 3 S.D = σ = \frac{1}{5} (1 + 4 + 9 + 16 + 25) - 9 = 11 - 9 = 2$

Stream:BITSATSubject:MathematicsTopic:StatisticsSubtopic:Relation Between Variance and Mean Deviation

⏱ 2mℹ️ Source: PYQ_2023

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