Student or Learner
Please help me check a sentence below:
There is a gradual rise in numbers between 40-49 age-group and 50-59 age-group.
My question is whether the sentence above is correct when I omit "age-group" right after 40-49 instead of leaving it as the original sentence?
Thanks very much for your answers.
Either way is correct. All that matters is that the reader interprets the same thing. If you leave out the first 'age-group' then you rely on the reader inferring that it's missing. (This happens a lot in English, and presumably other languages). In most cases that will be the case and there's no problem. Leaving it in avoids any doubt but has the slight disadvantage of repetition.
You could of course say instead, "There is a gradual rise in numbers between the 40-49 and 50-59 age-groups.
Maybe you mean there is a small increase from the 40-49 group level to the 50-59 group level?
I suppose it would be valid if the data being charted is across several years, (i.e. several years were being averaged out). Then it would be reasonable to talk about a gradual rise (if indeed that was the case) when individual years were being looked at. But I take your general point.