aggregate variable造句

• The model combines all possible nonrenewable resources into one aggregate variable, nonrenewable _ resources.
• In other words, correlation of aggregate variables take into account cross sectional effects which are not relevant at the individual level.
• It differs from other schools of economic thought, which have focused on aggregate variables, equilibrium analysis, and societal groups rather than individuals.
• The covariance of two aggregated variables depends not only on the covariance of two variables within the same individuals but also on covariances of the variables between different individuals.
• The problem for correlations entails naturally a problem for regressions on aggregate variables : the correlation fallacy is therefore an important issue for a researcher who wants to measure causal impacts.