The phrase "across several groups" is correct and usable in written English.
It can be used when discussing interactions, comparisons, or distributions that involve multiple groups or categories.
Example: "The survey results showed varying levels of satisfaction across several groups, indicating differing needs and preferences."
Alternatives: "among various groups" or "throughout multiple groups".
The project was divided across several groups, each one responsible for one of the following: infrastructure development, software development and attack generation.
Recipients of this award best exemplify the fabric of Columbia community building, either through bonding within a specific component of our community or bridging across several groups of our community, to offer cultural, political, social, and/or wellness inter-connectedness and relationship-building.
We have found strong evidence across several groups of soil organisms for an influence of environmental heterogeneity on species richness, notably that the majority of the mesofauna were governed by heterogeneity at our 'intermediate' scale.
During this process a facilitator kept track of areas that were listed across several groups.
Educational impact is analysed across several groups of adults with different chronic diseases and health problems.
PCR ribotyping has been found to robustly reflect genomic content across several groups (Kurka et al. 2014).
Autism is described as a "spectrum" representing a huge breadth of severity across several different groups of symptoms.
Across the region, several groups of workers have been on strike – transport workers, supply teachers and shipbuilders among them.
Given the increasing realization that the percentage of time in a given stage may be less important than their distribution dynamics across the night, several groups have considered sleep architecture in terms of the statistical distributions of sleep stage durations.
And so we reach back across several linguistic groups and several cultural groups, through the filters of redactors and translators too numerous to count, and struggle to don first-century clothing we can no longer wear.
But after five years of cheerleading by the president and the Energy Department, Mr. Bodman opted to forgo funding for one megaproject in favor of assisting several groups across the country that are already working with carbon capture and sequestration (CCS) technology.
