Check out our latest collection of supplementary books, guides, flashcards, practice questions for Economics, Statistics, Mathematics and many other academic subjects to ace your Cambridge, AP and Undergraduate Exams.
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Software prints about forty numbers. Roughly six of them matter. Here’s what every number in a regression table actually means — coefficients, standard errors, t-stats, p-values, R², F-stat — with annotated output from R, Stata and Excel, plus the six questions to ask any result.
Einstein probably never called compound interest the eighth wonder of the world — but the mathematics is remarkable enough without the quote. A complete guide to simple interest, compound interest, compounding frequency, the number e, continuous compounding, the Rule of 72, and effective annual rates, with worked examples and exam technique for AP and Cambridge A-Level.
Every proposition in microeconomics is the solution to the same problem: optimise subject to a constraint. A complete guide to Lagrange multipliers, the envelope theorem, why λ is a shadow price, Kuhn-Tucker conditions, and the duality between utility maximisation and cost minimisation.
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The Complete Bundle brings together everything we have built for AP and Cambridge A-Level Economics students: the full 914-page supplementary textbook, a 450-question practice workbook with mark schemes, a rapid-revision flashcard deck, and 100 real-world case studies with expert analysis. Four products, one price — designed to take you from first principles to exam-ready.
Most students use the textbook to understand the theory, the practice questions to test themselves under timed conditions, and the flashcards in the final week before the exam. The case studies sit alongside both — every concept grounded in something that actually happened, from carbon pricing in Sweden to the 2008 financial crisis. It is the study system we wish we had when we were students.
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