The phrase "affect the correlation" is correct and usable in written English.
It can be used when discussing how one variable or factor influences the relationship between two or more variables.
Example: "Changes in temperature can significantly affect the correlation between ice cream sales and the number of beachgoers."
Alternatives: "influence the correlation" or "impact the correlation".
Snow samples having varied crystals shapes such as rounded crystals in windpacks and hollow faceted crystals in depth hoar were studied and crystal shape did not affect the correlation in a detectable manner.
We investigated how characteristics of a landscape (structure), including the variation in habitat quality and spatial aggregation of the habitat, and the precise population-dynamic properties of the simulated species (dispersal and growth rates) affect the correlation between population abundance and amount of surrounding favourable habitat in the landscape.
While violations are possible, it is difficult to ascertain how violations on net would affect the correlation estimates.
This was done in order to avoid two clear clusters of different VT magnitudes in the linear plot, which could affect the correlation values.
There are several intrinsic factors that might affect the correlation between SPECT and DCE-MRI-derived data, which need to be taken into account.
We know that the redundancy will affect the correlation between two descriptions as well as the consequent rate-distortion of central and side coding.
The bivariate relationships just discussed may overlook relevant interactions between the explanatory variables that can affect the correlations uncovered above.
However, we cannot rule out other environmental confounding factors that might affect the correlations among breakfast staple type, gray matter volume, and IQ.
Stratification for dementia did not affect the correlations significantly.
Finally, the unique use of self-report measures to detect the study variables may affect the correlations between the measures.
However, it is unlikely that these biases would affect the correlations observed between the biopsies and the corresponding clinical data.
