Consumer theory still maximizes utility subject to a budget constraint, when in fact 2008 data show that consumer debt is 130% of disposable income. Granger-causality tests confirm Consumption precedence over income. We discuss several features of newer US data, such as the ability to start...

A new two-way map between time domain and numerical magnitudes or values domain (v-dom) provides a new solution to heteroscedasticity. Since sorted logs of squared fitted residuals are monotonic in the v-dom, we obtain a parsimonious fit there. Two theorems prove consistency, asymptotic...

Phillips (1986) provides asymptotic theory for regressions that relate nonstationary time series including those integrated of order 1, I(1). A practical implication of the literature on spurious regression is that one cannot trust the usual confidence intervals. In the absence of prior...

Quantitative researchers often use Student’s t-test (and its p-values) to claim that a particular regressor is important (statistically significantly) for explaining the variation in a response variable. A study is subject to the p-hacking problem when its author relies too much on formal...

Production function and regression methods using R -- Univariate time series analysis with R -- Bivariate time series analysis including stochastic diffusion -- Utility theory and empirical implications -- Vector models for multivariate problems -- Simultaneous equation models -- Limited...