The phrase "a valid means" is correct and usable in written English.
It can be used when discussing an acceptable or legitimate method for achieving a particular goal or outcome.
Example: "Using data analysis is a valid means to improve our marketing strategies."
Alternatives: "an acceptable method" or "a legitimate way".
Yet, despite its excesses, the duel remained for centuries a valid means to redress a wrong.
The result shows that the metrics provide a valid means to measure issues in component assembly.
France's constitutional court has upheld a ban on hydraulic fracturing, ruling that the law against the energy exploration technique known as "fracking" is a valid means of protecting the environment.
The school of logic, Nyaya, accepts verbal testimony, both human and divine, as a valid means of knowledge but notes that only the divine knowledge of the Vedas is infallible.
In general, the results presented in this study confirm that the proposed simulation model provides a valid means of characterizing the performance of a fuel cell hybrid scooter under typical urban riding conditions.
The finite element method plays an extremely important role in forging process design as it provides a valid means to quantify forging errors and thereby govern die shape modification to improve the dimensional accuracy of the component.
Copper powders of a small size range with a regular spherical shape were used to ensure a valid mean particle size.
A self-consistent equivalent inclusion solution is shown to produce a valid mean-field estimate of the effective stiffness of the polycrystal.
A valid mean is reliable mean if it is at least 2.5 times standard deviation (Bevington and Robinson 2002).
But, as I contemplate the end of my mother's life, her dissembling seems to me a perfectly valid means of dealing with a death sentence.
Far from absurd, that is a perfectly valid means of appropriation.
