Most of the university alumni were in the younger age groups, while in the oldest age group many people did not have any qualifications.
aspire12345678 Most of the university alumni were in the younger age groups, while in the oldest age group many people did not have any qualifications. I'm thinking not. You use "alumni" when their affiliation is pertinent.
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aspire12345678Most of the university alumni were in the younger age groups, while in the oldest age group many people did not have any qualifications.
I'm thinking not. You use "alumni" when their affiliation is pertinent. I'd be willing to bet you mean "graduates":
"Most of the university graduates were in the younger age groups, while in the
Is it possible that you were describing a group of people in which the younger people had a university education and the older people did not?
You need to make the two parts of your sentence parallel.
The younger members of the group were university graduates while the older ones had little education.
You can use 'alumni' if you want, but it's not really