Mathematics for IGCSE & O level - Statistical Diagrams (Section 2 - No. 39)
How can the median be found using the cumulative frequency diagram?
By finding the x-axis value corresponding to the highest cumulative frequency.
By finding the x-axis value corresponding to the 25th percentile.
By finding the x-axis value corresponding to the 50th percentile.
By finding the difference between the upper and lower quartiles.
Giải thích
The median is the 50th percentile, and is found from the graph where the y-axis equals 50% of the data.