The phrase "a valid representative" is correct and usable in written English.
You can use it when referring to someone or something that is officially recognized or accepted as a representative in a specific context.
Example: "The committee appointed a valid representative to voice the concerns of the community during the meeting."
Alternatives: "an authorized representative" or "a legitimate representative."
The obstruent onset (point 1) and offset (point 10) are voiced by definition (i.e. vowel formants offset and onset), but the more central points can be regarded as a valid representative to examine significant voicing differences during stop closure.
Whether the first-born child is a valid representative of the growth potential for later children of the same mother may be questionable.
Therefore, the BGS98 is regarded as a valid representative survey, which has been used extensively as a standard measure of the heath status of the German population.
Thirdly, the assumption that the mean HbA1c at baseline is a valid representative of the switching threshold does not take into account the potentially skewed nature of this parameter.
Through a policy framework for community participation, this new District Health Council can develop a transparent and interactive process by which the community's specific roles are clearly defined, each representative is perceived as a valid representative of the community, capacity is built for engagement with the health system, and the health system is responsive to community concerns.
Unacceptably low response rates, one of the main causes of non-response error, is increasingly challenging the continued success of population surveys as a means of collecting valid, representative, reliable and useful data on health (and many other issues) [ 33].
In this paper, we present an approach to estimate acceptance in a valid and representative form with only one working model, and apply it to test an innovative zero-emission toilet with recycling of wash water.
However, despite many engineering materials like metals, polymers, ceramics and rocks, there is no popular test procedure and test specimen for determining a valid and representative KIc value for the asphalt concretes.
Although the NLCA is non-mandatory, we have previously shown that this is a valid and representative dataset (Rich et al, 2011b).
The database has been shown to be a valid and representative instrument to describe VC in various age-groups in Germany [ 27, 53] - a prerequisite for valid VE estimates when the screening method is applied [ 25].
These studies included the evaluation of the representative nature of amplified RNA compared with the original RNA sample, a comparison of direct and in-direct methods of probe labeling and the determination of the minimum starting RNA material needed to perform a valid and representative amplification.
