JEE MATHEMATICS MCQ: STATISTICS

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A student scores the following marks in five tests 45, 54, 41, 57, 43. His score is not known for the sixth test. If the mean score is 48 in the six tests, then the standard deviation of the marks in six tests is

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Correct option: B

\frac{{10}}{{\sqrt 3 }}

Option B (

\frac{{10}}{{\sqrt 3 }}

) is correct because it is the standard deviation calculated from the given test scores and the unknown sixth test score, where the mean of the six scores is 48.

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