If x=6.45, f_i=100, f_i x_i= . .(645,6.45,64.5) - Vidyadip

Question

If $\bar{x}=6.45, \Sigma f_i=100, \Sigma f_i x_i=\ldots \ldots . .(645,6.45,64.5)$

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Answer

$645$

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