Mathematics for IGCSE & O level - Statistical Diagrams (Section 1 - No. 37)

In the context of a cumulative frequency diagram, how is the lower quartile determined?

By finding the x-axis value at 25% of the total frequency.

By finding the x-axis value at 50% of the total frequency.

By finding the x-axis value at 75% of the total frequency.

By finding the difference between the upper and lower limits of the data.

The lower quartile is at the 25th percentile.