The phrase "a poor correlation is" is correct and usable in written English.
It can be used when discussing the relationship between two variables or data sets, particularly in statistical or analytical contexts.
Example: "In our study, we found that a poor correlation is evident between the amount of time spent studying and the final exam scores."
Alternatives: "a weak correlation is" or "a low correlation is".
A poor correlation is observed between the ages and 36Ar abundances of the fragments.
In general, a poor correlation is found between the experimental results and analytical calculations according to EC 2 for all specimens apart for beams B103, B106 and B109 without shear reinforcement.
Whether such a poor correlation is related to a high proportion of cleaved ER is a question of prime importance.
By contrast, Zarski et al. [ 42] believed that a poor correlation is observed between ALT levels and both hepatic necroinflammatory activity and fibrosis stage.
However, in both trauma and age-related osteoarthritis, a poor correlation is noted between the extent of joint destruction and the frequency and severity of joint pain [ 3, 21, 56].
A poor correlation was observed when comparing the model's predicted nitrogen, phosphorus, and sediment with the observed counterparts.
Using the default simulation HTC for the metal die interface, a poor correlation was seen, with the temperature response being much less for the simulation model.
A poor correlation was observed between the hardness and the atomic size and elastic modulus mismatch in these single-phase BCC RHEAs, suggesting that core structure of the screw dislocations is a crucial parameter in understanding the strength of these alloys.
However, a poor correlation was found between TOC and PAH concentrations in this study (Figure 5a, R = 0.30).
A poor correlation was obtained between the hydraulic indexes and the effluent fraction of disinfectant, indicating that they are not good predictors for water quality.
A poor correlation was observed with PAX samples with a correlation coefficient value of only 0.21.
