Top University Microeconomics Tutors in New York, NY
A monopolist does not read its price off a supply curve — it chooses the price, and the point it picks is the exam question. Getting there means one derivation done cleanly: why marginal revenue sits below demand, where the profit-maximising quantity lands, and how much surplus the markup destroys. This is the intermediate-micro monopoly […]
Econometrics Tutor LSE London – EconTutors
Omitted variable bias is the reason multiple regression exists. Leave out a variable that both matters and moves with your regressor, and OLS quietly hands you the wrong slope — confidently, with a small standard error attached. Knowing when that happens, in which direction, and by how much is the single most examined skill in […]
Online Econometrics Tutors for LSE, Kings, UCL, Oxford, Cambridge
Time-series regressions have a habit their cross-sectional cousins mostly lack: this quarter’s error looks like last quarter’s. That is autocorrelation, and like heteroskedasticity it leaves your OLS coefficients standing while quietly wrecking every standard error printed beside them. The repair — Newey–West standard errors — is one option in any software package, but examiners want […]
Microeconomics Tutors at Yale
Some information problems only bite after a contract is signed. Your manager cannot observe how hard you actually work, so your pay must be built so that working hard is your own best move. That is moral hazard, and the principal–agent model is how economists tame it — a staple of intermediate micro, and one […]
Econometrics Tutor in London and online
Panel data is the closest most applied economists get to a controlled experiment: the same firms, people or countries observed year after year. Pooled carelessly, as if the observations were strangers, it can get the sign of an effect wrong — not just the size. The fixed-versus-random-effects choice is where that care lives, and it […]