The phrase "attributed to a group" is correct and usable in written English.
It can be used when discussing ideas, actions, or characteristics that are associated with or credited to a specific group of people.
Example: "The theory of relativity is often attributed to a group of physicists who contributed to its development."
Alternatives: "credited to a group" or "ascribed to a group".
The killing, which was attributed to a group of renegade ex-Army officers, horrified Yangon, and thousands of people, of many faiths, flocked to the funeral.
Most of the delicious smell of bacon is attributed to a group of nitrogen-containing compounds known as pyridines and pyrazines.
The dire prediction was attributed to a "group of MPs" in widespread media coverage, including the Sun, which wrote "Britain teeters on the brink of an energy crisis, MPs claim".
Secretary General Ban Ki-moon is appointing an independent panel to investigate the car bombing of two United Nations buildings in Algiers last month attributed to a group linked to Al Qaeda that killed 17 staff members and at least 30 other people, the organization announced.
The hacking has been attributed to a group of hackers called the Syrian Electronic Army, as some DNS lookup results point to servers in control of the sites.
It's been attributed to a group of hackers going by the name Rustle League.* They've been pestering Anonymous since last summer, and though they've also made it their business to troll lazy journalists and Justin Bieber fans, their main sport is trolling Anonymous.
Those attacks, attributed to a radical Islamic group based in Pakistan, killed at least 173 people.
The 1H NMR spectra of the PHAs extracted from Bacillus sp. NA10 shows a doublet at 1.26 ppm which is attributed to the methyl group coupled to one proton, a doublet of quadruplet at 2.580 ppm which is attributed to a methylene group adjacent to an asymmetric carbon atom bearing a single proton, and a multiplet at 5.25 ppm characteristic of the methyne group.
There have been conflicting reports over where in Italy the fans came from, but blame has been attributed to a national group known as "Ultras Italia".
In addition, the news agency Agence France-Presse reported on Saturday night that a statement attributed to a terror group led by Abu Musab al-Zarqawi, the Jordanian militant believed to be responsible for attacks on Iraqi civilians and American soldiers, claimed the group had beheaded 11 Iraqi police and national guardsmen.
However, the paper said its breach had been attributed to a different group.
