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Calculate the mean, variance and standard devation for the following data :

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`therefore` Mean =`barx=(Sigma f_ix_i)/(Sigma f_i)=3100/50=62`
Variance =`sigma^2=1/N Sigma f_i(x_i-barx)^2=1/50xx10050=201`
`therefore` Standard deviation = `sigma =sqrt201`=14.18
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AAKASH INSTITUTE ENGLISH-STATISTICS-Section-C Assertion-Reason
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