Mathematics for IGCSE & O level - Statistical Diagrams (Section 5 - No. 29)

What does a straight, sloping line in a cumulative frequency diagram indicate about the data distribution?

Data is evenly distributed in that interval.

There are many outliers.

The data is clustered.

There is no data in the interval.

A straight line means a consistent rate of change in the cumulative frequency, indicating even distribution within that interval.