The phrase "a group of randomly" is not correct as it is incomplete and lacks a noun to follow "randomly." It can be used in contexts where you want to describe a group that is selected or formed without a specific pattern or order, but it needs to be completed.
Example: "A group of randomly selected participants will be surveyed for the study."
Alternatives: "a collection of randomly" or "a set of randomly".
In a 1997 study the state gave the entire amount to a group of randomly selected mothers.
For control purposes, a group of randomly selected organisations was also included.
We retrospectively compared fifty-five consecutive patients with VEEG-proven PNES (N1 = 55) with a group of randomly selected patients with VEEG-proven epilepsy (N2 = 55).
This study examined the prevalence of psychological abuse and identified individual characteristics associated with different levels of psychological abuse in a group of randomly selected elderly Taiwanese.
Not surprisingly, the report found, added funds had outperformed a group of randomly selected similar funds before the change was made, by 1.34 percentage points each year.
Robert Rosenthal's classic experiment in the 1960s showed that when teachers had high expectations for a group of randomly selected students in the classroom, those students excelled significantly over the school year regardless of how well the students did at the beginning of the school year.
On the days of counting, we weighed a group of ten randomly chosen eggs or ten randomly chosen nymphs per family and divided the values by 10 to obtain the mean egg mass and mean nymph weight, respectively.
Instead, it was merely given a list of possible parts it could work with, the physical laws of gravity and friction, the goal of moving on a horizontal surface and a group of 200 randomly constructed, nonworking designs.
For instance, it should be possible to distinguish an insurgency with a rigid command structure from a group of smaller, randomly linked units.
The subjects were asked to select an object from among a group of items randomly placed on the computer screen that were visible exclusively during the visual search process.
Take a group of 1,000 randomly selected Americans, and pick the one with the highest income; he's going to get the majority of that group's tax break.
