The phrase "a relatively simple set" is correct and usable in written English.
It can be used when describing a collection or group of items, concepts, or rules that are not complex in nature.
Example: "The project requires a relatively simple set of guidelines to follow for successful completion."
Alternatives: "a fairly straightforward collection" or "an uncomplicated group."
It is a relatively simple set of interventions that could easily spread to almost every other employer and insurer.
A relatively simple set of steps can tell a computer to use domain-name servers outside the country.
Although our results concentrated upon a relatively simple set of initial topics of inquiry, the survey revealed a number of interesting findings.
A relatively simple set of test procedures at site would be used to confirm the unit has been delivered and installed without harm to any of its equipment.
It is, therefore, possible to gain a rather comprehensive picture of the molecular structure of long-chain branched polyethylenes using only a relatively simple set of rheological experiments.
A code of calligraphic script elements maps to the 26 Roman letters and a relatively simple set of rules for the composition of square words allow one to write English using Chinese calligraphic principles.
But to make the work pay off, the real challenge is the reverse: to get systems that work well in a lab's relatively simple setting to work in the more complex natural environment.
It also has a relatively simple setup, and can be self-administered outside of the hospital setting.
Biological systems are clearly far more complex than relatively simple sets of equations.
We also prefer this relatively simple set-up to more complicated simulators (e.g. [ 9, 10]), as it provides a neutral framework for comparing widely differing methods.
The model's poor performance in a relatively simple tectonic setting does not bode well for its successful application to the many areas of the world characterized by complex fault interactions.
