The phrase "a pair of groups" is correct and usable in written English.
It can be used when referring to two distinct groups that are being considered together for comparison or analysis.
Example: "In the study, we analyzed a pair of groups: one that received treatment and another that did not."
Alternatives: "two groups" or "a duo of groups".
It recounts the two years he spent traveling the country with a pair of groups he says many people love to hate: the jam band Phish and the ghoulish rap group Insane Clown Posse, each of which has cultivated "a vast, intensely loyal grass roots following despite being alternately ignored and mocked by the mainstream," he writes.
based on McQuitty's or WPGMA method [56] where the distance between a pair of groups A and B is measured using the weighted arithmetic mean of all the pairwise distances between the data points in A and B. The rows which represent the suspected CHIKF patients and healthy individuals are left untouched.
Final fold change between a pair of groups was calculated as 2ΔΔCt.
Figures in bold indicate a close Euclidean Distance between a pair of groups in contrast to the other compared pairs of groups.
9 (ii) For a pair of groups j and l, we want to know whether they interact with each other to determine environmental-induced changes.
These gene exchange communities (GECs) are often represented by a graph or network structure with nodes signifying organisms or taxonomic groups and edges between nodes indicating evidence of LGT between a pair of groups.
A pair of ammonium groups tethered to the phenazine group in the 1 and 6 positions through alkyl amide links, act as hydrogen-bond donors to amide oxygen atoms of symmetry-related neighbouring dications.
This procedure was repeated with two different chimpanzee groups (Group 1 and Group 2) such that chimpanzees in both groups observed a pair of trained group members performing each of the foraging behaviors.
Of rising bands, among the most promising were Whitechapel and Suicide Silence, a pair of brutal groups playing deathcore, a brand of metalcore taking influences from death metal.
In a brief hearing before Judge Paul A. Crotty in United States District Court in Manhattan, Mr. Martinez admitted to stealing $51,000 by submitting fake invoices to the City Council and diverting $55,000 more intended for a pair of nonprofit groups in his Upper Manhattan district.
Her underlings had at first barred a pair of aid groups from the gathering, which was held to pledge assistance for Afghanistan, but Mrs Tanaka decided to invite the two groups anyway.
