"chance variation" is a correct and usable phrase in written English.
You can use this phrase to refer to a change in something that is caused by chance rather than by intentional action. For example, you could say, "Although we expected the experiment to produce consistent results, the results actually varied due to chance variation."
But these differences were small and likely due to chance variation.
It is reasonable to rule out confounding by chance variation, long-term trends, changes in traffic volume and regression-to-the-mean.
The interpretation of results from models that rely solely on chance variation in peer groups is therefore complicated by bias from weak instruments.
The first dataset is from Chandra and suggests that the spectral model provides some protection against chance variation in PSF or back- ground.
The study found the highest rates of MG in young women (between 16 and 19 years old), and slightly older men (aged between 25 and 34), although this could have been chance variation.
Chance variation would be a matter of people trying out new types of economic relations.
Artificial selection, however, which depends as much on "chance variation" as its natural sister, is often quite directional.
The author presents Fisher's way of partitioning phenotypic variation into genotypic, environmental and chance variation, but gives the impression it was Dobzhansky's.
However, given that our results may be due to chance variation in effects, more research is needed to verify if these same results hold true across various racial/ethnic populations and across longer periods of follow-up.
The I 2 statistic describes the percentage of variation across studies that is caused by substantial statistical heterogeneity rather than random chance variation; an I 2 statistic >50 % is the cutoff above which substantial statistical heterogeneity might be present.
The obvious counter, however, is that in evolutionary biology we can provide a causal story to underpin these functional explanations; a story involving chance variation and survival of the fittest.
