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over-represent
over-represent v.
Brit. 
/ˌəʊvərɛprᵻˈzɛnt/
, /ˌəʊvərɛprᵻˈzɛnt/U.S. /ˌoʊvərˌrɛprəˈzɛnt/
/ˌoʊvərˌrɛprəˈzɛnt/ΚΠ
1849 Amer. Whig Rev. Mar. 290/2 The next year giving..to the one that was over-represented a number less.
1881 Jrnl. Statist. Soc. 44 146 Both the dangers above referred to, viz., (1) of the majority in the constituencies being misrepresented in the assembly, and (2) of its being over-represented there.
1987 Amer. Sociol. Rev. 52 393 Our subsample overrepresents those with children.
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