Chapter 13 · Question 6
What is an ogive? How can median be found graphically?
Q6
What is an ogive? How can median be found graphically?
Answer Revealed
Direct Answer:
An ogive is a cumulative frequency curve. Median can be found by locating on the cumulative frequency axis, drawing a horizontal line to the ogive, and then dropping a perpendicular to the data axis.
Simple Explanation
An ogive graph turns cumulative frequencies into a curve. The middle value is read at .
Exam-Ready Structure
There are less-than and more-than ogives. To find median graphically from an ogive, mark on the cumulative frequency axis, draw a horizontal line to meet the curve, and draw a vertical line down to the class-value axis. The value obtained is the median.
Key Points
- An ogive is a cumulative frequency curve.
- Use the NCERT formula or theorem carefully.
- Write units and final conclusion where applicable.