Yes—that sentence is clear, but it can be made a bit more precise depending on the context.
If you just want a clean rewrite:
- “The chart shows age groups from 30 to 69 years.”
More formal versions:
- “The chart displays age groups ranging from 30 to 69 years of age.”
- “The chart categorizes individuals into age groups spanning 30–69 years.”
If you want to emphasize grouping:
- “The chart divides the population into age brackets between 30 and 69 years.”
If you share the full paragraph, I can refine it for tone (academic, report, or casual).
