The phrase "a noticeable variation in" is correct and usable in written English.
It can be used when discussing differences or changes that are easily observed in a particular context, such as data, behavior, or characteristics.
Example: "The study revealed a noticeable variation in the participants' responses to the survey questions."
Alternatives: "a significant difference in" or "an observable change in".
In contrast, samples from different categories resulted in a noticeable variation in macroscopic results, corroborating the importance of using standardized materials.
According to scanning and transmission electron microscopy analysis, two different types of macroparticles with a distinct difference in their shape and a noticeable variation in their chemical composition, i.e. the Al/Cr ratio, can be distinguished.
On the other hand, principal component and cluster analyses, depending on well logging data (gamma ray, sonic, density and neutron), indicated that the whole reservoir can be divided at least into four electrofacies having a noticeable variation in reservoir quality, as correlated with the measured permeability.
There is a noticeable variation in the eruption rate of the teeth, with a peak in eruption velocity at the time of the maximum pubertal rate of growth in body height [6].
The absence of a noticeable variation in the obtained morphologies of the doped samples indicates that varying the concentration of Co doping hardly introduces significant changes in the particle morphologies.
There is a noticeable variation in the risk of non-fatal injury, with significant differences associated with gender, education, employment, marital status and nativity.
Images and supplementary information from several studies [1], [2], [4], [8], [11] have not indicated any noticeable variation in the FA width even as it grows and shrinks in length due to binding/unbinding of ligands, integrins and plaque proteins.
A noticeable variation was observed in the cattle-level seroprevalence, but the rate remained relatively low (<5%).
The SEM pictures in Figures 2b and 3b show that there is a noticeable variation between holes from the same chip, and there is a large difference in nanohole size and shape between two chips fabricated from different batches.
Examination of the microarray data revealed excessive variance within the data for these genes (itself probably a consequence of noticeable variation in the timing and onset of pigment development between replicate experiments).
For a particular concrete mix at the same age, noticeable variation in the porosity among the three cylinders was noted.
