The phrase "a marginal value" is correct and usable in written English.
It can be used in contexts where you are discussing a value that is considered to be of minor importance or significance in comparison to others.
Example: "The study revealed that the new policy had only a marginal value in improving overall productivity."
Alternatives: "a minimal value" or "a negligible value".
I put a marginal value on domestic upgrades, so long as I can take the best seat in coach (I like the bulk-head row) when I book my ticket.
The smoke has been reduced to 7.4%, the emission of CO and HC has been reduced to a marginal value of 2.3% and 1% respectively compared with that of B20 blend.
In this case, the interaction between the level of taxation and the manager's degree of risk aversion can result in the acceptance of capital investment projects that have a marginal value to shareholders below marginal cost.
On their own, cherries and plums have a marginal value too--10 cherries or one plum provides only a fraction of the RDA for any vitamin or mineral.
However, a retrospective analysis of the delineated catchment areas in this study gave a marginal value of 0.6%.
Thus, it can be hard to determine whether a new intervention truly has a marginal value beyond what has already been shown to be beneficial.
Navrud [ 22] followed a contingent valuation approach similar to that of Tolley et al. [ 26], but using an improved version of the survey and sample design; he found that there was a declining marginal value of a symptom or illness day per year: per person the mean WTP of $376 to avoid one additional day of symptoms, while about $1210 to avoid 14 additional days symptoms.
From the total revenue, one can determine (Q_{i}), or the probability of allocation of gas, as the marginal revenue; that is, any buyer that is willing to pay higher has a higher probability of getting allocated their gas demands and will yield a higher marginal value to the gas seller.
The coefficient veterinary services has a negative marginal value (−0.0551) and is significant (P = 0.000), indicating that loss of heifers was lower for camel herds that were accessing veterinary services.
The coefficient for herd variable has a positive marginal value (0.0857) and is significant (P = 0.000), indicating that loss of heifers was 8.6% higher in peri-urban than in the pastoral camel herds.
Therefore, its conveyance entails a high cost per unit of volume and is often not economically viable over long distances unless a high marginal value can be obtained.
