Question

In grouped frequency distribution, the formula to find median is:

• A. \( l + \left( \frac{\frac{n}{2} - cf}{f} \right) \times h \)
• B. \( l - \left( \frac{\frac{n}{2} - cf}{f} \right) \)
• C. \( l + \left( \frac{\frac{n}{2} + cf}{f} \right) \times h \)
• D. \( l \pm \left( \frac{\frac{n}{2} + cf}{2f} \right) \)

Hint:

To remember the grouped median formula easily: \[ \text{Median} = l + \left( \frac{\frac{n}{2} - cf}{f} \right)\times h \] Always remember:
• Start from the lower boundary \(l\)
• Subtract the previous cumulative frequency \(cf\)
• Multiply by class width \(h\)

Answer 1

The Correct Option is A