The phrase "a variety of methodologies" is correct and commonly used in written English.
It can be used when discussing different approaches or methods for achieving a certain goal or solving a problem. Example sentence: "The researchers employed a variety of methodologies to gather data, including surveys, interviews, and observation."
Complicating matters further, many studies are small and they use a variety of methodologies, making comparison difficult.
Political scientists have tried to measure the effectiveness of campaign spending using a variety of methodologies.
This mega-review brought together evidence from 54 difference scientific studies using a variety of methodologies and involving 14.7 million children from around the world.
These later papers, by they way, use a variety of methodologies for dealing with non-linearity and also for trying to determine causation.
Apps are delivered in a variety of methodologies.
A variety of methodologies and tools are available to help design application-specific multiprocessors.
EPA Toxicity Estimation Software Tool TESTTheToxicitycity Estimation Software Tool (TEST) allows for the prediction of a series of physicochemical and toxicity endpoints using a variety of QSAR methodologies.
In addition, as alternative phosphopeptide enrichment strategies, phosphopeptides can be de-protected and collected under acidic conditions and a variety of chemical methodologies have likewise appeared.
To mitigate this risk, we have developed a strategy that reduces the rate of fragment mis-assembly and is compatible with a variety of cloning methodologies.
Furthermore, with these materials as a base, a variety of specialized methodologies have been developed or adopted to enhance neo-tendogenesis.
The decision-making process opportunities are stimulated by a variety of different methodologies, including interviews (Castleberry, 2007), games (Gibson, 2003), exercises (Schumann et al., 2006), and simulations (Wankel and Stachowicz-Stanusch, 2012).
