The phrase "an acceptable proxy" is correct and usable in written English.
You can use it when referring to a substitute or stand-in that is deemed satisfactory for a particular purpose or context.
Example: "In this study, we used survey responses as an acceptable proxy for measuring customer satisfaction."
Alternatives: "a valid substitute" or "a suitable representative".
That size, scale and a professional letterhead are an acceptable proxy for ethics.
As Cullinan says: "We have been conned into believing that economic prosperity (usually defined by GDP) is an acceptable proxy for what we really want - and it isn't.
Our results conform those achieved by Cukierman (1992), showing an acceptable proxy of the real and legal independence as well as the beneficial effects stemming from inflation.
In the absence of a notation for the low and high temperatures, an average of the hourly temperatures that are transmitted by automated stations is deemed an acceptable proxy for the average daily, monthly, and annual temperature.
The child's grandparents' countries of birth were recorded to provide an acceptable proxy for ethnicity.
They concluded that self-report of symptoms was an acceptable proxy measure of the presence of infectious diseases.
Common demographics currently in use in international registries were reviewed and age, sex, and socioeconomic status were chosen, with education level being used as an internationally acceptable proxy for the latter.
Grandma Marilyn, anyway, has become an acceptable, discussable proxy for the rich personal life.
But in a memo dated May 25 , 2011 in response to an obscure anti-dumping case involving a chemical imported from China, the department said that acceptable proxies for China were the Philippines, Indonesia, Ukraine, Thailand, Colombia and South Africa.
But the American manufacturers subsequently switched gears and urged the Commerce Department to choose instead a comparison with Thailand, which is on the department's recent lists of acceptable proxies.
While it may be difficult at first to identify spokespeople for some unorganized or hard-to-represent interests, it is almost always possible to find acceptable proxies to represent them.
