The phrase "a miscellaneous group" is correct and usable in written English.
It can be used to describe a collection of items or people that do not fit into a specific category or classification.
Example: "The event attracted a miscellaneous group of attendees, including artists, scientists, and entrepreneurs."
Alternatives: "a mixed group" or "a varied collection".
The normocytic anemias are a miscellaneous group, by no means as homogeneous as the megaloblastic anemias.
The letter was signed by a miscellaneous group of seventy-three people, including distant family members, writers, nuns, and lawyers.
The greater part of it is devoted to notes on marriage and death customs, and to a miscellaneous group of notes on omens, charms, magic, and the like.
Crucial to that failure was a publicity and lobbying campaign waged by a miscellaneous group of scholars, educators, and public-interest activists.
(It turns out that the United States Agriculture Department now has five recommended food groups -- grains, vegetables, fruits, diary products and meats -- and a miscellaneous group for whatever is left).
On Ninth Street, near University Place, I looked in the window of a restaurant called Aunt Clemmy's and saw a miscellaneous group of Villagers sitting around a table in there, some of whom I vaguely knew, and I decided to try 'The Barricades' out on them.
That piece has found a footing in the American repertory, but its successors at the Met — Philip Glass's "The Voyage," John Harbison's "The Great Gatsby," Tobias Picker's "An American Tragedy," and Tan Dun's "The First Emperor" — are a rather miscellaneous group.
The current classification of iron overload syndromes divides patients into three groups (Table 2): (1) those who have inherited causes of iron overload, (2) those who have various causes of secondary iron overload, and (3) a small miscellaneous group.
There were 02/03 VRE (E. faecalis) from pneumonia and 01/03 VRE (E. faecium) was from a patient in miscellaneous group (Table 6).
The miscellaneous group represents a mixed group of matched and partially matched patients, so it is difficult to interpret the differences between the groups.
"We're trying to look more like an investment bank with industrial interests that complement our financial skills and less like a miscellaneous industrial group," he said.
