- Asum(fi)/sum(xi)
- Bsum(fi*xi)/sum(fi)
- Csum(xi)/sum(fi)
- Dsum(fi*xi)/sum(xi)
Step-by-Step Solution
Mean (direct method) = (sum of fi*xi) divided by (sum of fi), where xi is the class mark.
Answer: B) sum(fi*xi)/sum(fi)
In the direct method, the mean of grouped data is given by which formula?
Class 10Mean of Grouped DataStatistics and Probability
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