The phrase "a weak trend" is correct and usable in written English.
It can be used to describe a trend that is not strong or significant, often in contexts like data analysis, market research, or social observations.
Example: "The data indicates a weak trend in consumer spending over the last quarter, suggesting that economic conditions may not be improving."
Alternatives: "a slight trend" or "a minor trend".
Pooled data from all species indicated a weak trend towards elevated PUFAs at lower temperature.
There was a weak trend for regions known to encode T cell epitopes to have slightly higher indices suggesting balancing selection.
TEM particle size analysis also showed a weak trend with decreasing particle size over time, however, the associated standard deviations were quite big and sometimes overlapping.
In both cases a weak trend is observed between performance and training time (R2 0.25 and 0.38 respectively, Additional file 1: Figure S5).
The Eliminet (smallest mesh) only showed a weak trend in reduced intake in grams per minute translating to a significantly increased intake time per 1 kg of hay compared to the Large haynet (Eliminet 33 min, Furlong 29 min, Haylage 28 min, Large 25 min; p < 0.01) when excluding acclimatisation data (beginning).
A weak trend in the same direction was observed when combining 3 independent external glioblastoma datasets.
The left M170 also showed faster peak latencies for high than for low frequency items, although this was only a weak trend (F 1,12) = 2.19, p = 0.16).
We observed a weak trend indicating that domain residues contacting mostly residues in the linear motif were more conserved than those contacting the context.
However, the choice of platform was insignificant and only those trials located in SMD showed a weak trend of increased citations.
By visual comparison of Figure 5A along the ten rounds, we see a clear trend of increasing A and decreasing G content, and a weak trend of increasing U content.
I found a weak trend showing that the power to predict the known NRI increased and the power to predict the known NTI decreased as the number of taxa in the assemblage increased (Fig. S4).
