The phrase "a spectrum of variables" is correct and usable in written English.
It can be used when discussing a range of different factors or elements that vary in degree or type within a particular context.
Example: "In our research, we examined a spectrum of variables that influence consumer behavior, including age, income, and education level."
Alternatives: "a range of factors" or "a variety of elements".
"Her approval is key to the purchase". But weighing a spectrum of variables can take time.
Furthermore, since these findings were observed in neuro-endocrine response and in behavioral performance as well, this study suggests that, rather than being limited to the behavioral realm, abnormal within-group variation can be the norm among a spectrum of variables and that these conclusions may well apply to a number of domains.
In many patients, the decision based on the presence of these indicative symptoms is not clear-cut but based on a spectrum of clinical variables and personal experience.
Many of today's project evaluation procedures include a broad spectrum of variables and rely on a combination of rational and intuitive processes for defining the value of a new project venture to the enterprise.
This approach is important for the analyses described herein, because different types and a broad spectrum of variables were analyzed for the current study and, thus, a single multivariate regression model approach would be impossible.
It does, however, compensate by offering detailed, geographically distributed but nonetheless coordinated physical and ecologic effects across a wide spectrum of variables.
Strengths of the study include the selection of a broad spectrum of variables as influencing factors, the use of multivariate regression modelling to assess independent effects and the large sample size.
Economic data are likely to be of greater use to policy-makers if they cover a broad spectrum of variables including lost productivity and out-of-pocket expenses, which are best determined using patient-report.
Indeed, the complexity and number of metabolic pathways that are dysregulated in the metabolic syndrome and that could be affected by K-111 treatment (Fig. 1) make it desirable for a broad spectrum of variables (e.g. relating to inflammation, vascular function, hypertension, and lipids) to be included in addition to primary endpoints.
It facilitates experimentation with a spectrum of coarse-grained variables, prototyping rare events (such as chemical reactions), or simulating nanocharacterization experiments such as terahertz spectroscopy, AFM, nanopore, and time-of-flight mass spectroscopy.
