"decrease variation" is correct and usable in written English.
You can use this phrase when you are discussing ways to minimize or reduce variation of something. For example, "We need to introduce stricter protocols in order to decrease variation in the quality of our product."
Studies assessing the effect of interventions to decrease variation in colonoscopy quality have shown inconsistent results.
The first approach concerns a variation-aware algorithm capable of extracting optimal design parameters to decrease variation and power.
An intermediate level of landscape fragmentation appeared to decrease variation in total bird abundance and to provide greater overall species richness, the latter an important consideration when the concern lies with optimizing multiple species management.
Strategies that improve scheduling, decrease variation among clinics, and improve patient access will likely improve rates of closing the referral loop.
We mounted the rat lumbar spinal samples from multiple groups into the same OCT block and simultaneously sectioned them with a cryostat at −30 °C (HM550; Microm, Waldorf, Germany) in order to decrease variation in the immunohistochemical processes.
In other words, intense postcopulatory selection will act to decrease variation in sperm morphology within a species towards what might be an 'optimum' morphology.
In addition, the preparation of the uniform insulating layer is important to decrease variations in the quality as an SLN tracer.
Therefore, it is important to organize services that minimize delays and decrease variations in the time between cancer screening and treatment.
The combination of above factors leads to a decrease-increase-decrease variation in mechanical properties.
As shown in Figure 2a, both the peak energies (E p ) show an "S shape" (decrease-increase-decrease) variation with increasing temperature.
The first decreasing variation would be due to a tsunami propagating from the surrounding subsidence area.
