Mathematics · Statistics
For a grouped data, if xi is the class mark and fi is the corresponding frequency, then by direct method, mean x̄ is given by:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1∑ fixi∑ xi
- 2∑ xi∑ fi
- 3∑ fixi
- 4∑ fixi∑ fi✓
Correct answer
∑ fixi∑ fi
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