Answer:
Quality of life is a hidden variable because it cannot be measured directly but must be inferred from measurable variables such as wealth, success, and environment.
Explanation:
Hidden variable: The term "hidden variable" is described as the proposition that specific "statistical models" of any physical systems, for example, Quantum mechanics are being incomplete inherently, and along with this the apparent randomness of a particular system is being dependent not on "collapsing functions" but instead it is due to any unmeasurable or unseen or hidden variables.
