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Questions  >>  Olympiad-Math  >>  Class 10
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Q)

The mean of a discrete frequency distribution $\large\frac{x}{f_i} $$; i=1,2,3,.n$ is given by

$(A) \; \large\frac{\sum \limits_{i=1}^{n} f_i x_i}{\sum \limits_{i=1}^{n} fi} \\(B)\; \frac{1}{n} \sum \limits_{i=1}^{n} f_i x_i \\(C)\; \large\frac{\sum \limits_{i=1}^{n} f_i x_i}{\sum \limits_{i=1}^{n} xi} \\(D)\;\large\frac{\sum \limits_{i=1}^{n} f_i x_i}{\sum \limits_{i=1}^{n} i} $

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