Civil Services Uttar Pradesh (उत्तर प्रदेश) PCS Mock Test Series 2025 Quantitative Aptitude Elementary Statistics
The formula to calculate mean (Long Method) from classified data is :
1
\(\rm M=\frac{\sum f N}{N} \)
2
\(\rm M=\frac{\sum x}{N} \)
3
\(\rm M=\frac{\sum f x}{\sum x} \)
4
\(\rm M=\frac{\sum f x}{N}\)