List of tables; List of diagrams; Preface; Part I. Introduction: 1. Newmarch and the progress of statistical inquiry; 2. Economics and measurement; 3. Four types of question in economics; Part II. Four Aspects of the Problem of Measurement: 4. Facts and empirical constructs; 5. Deductively formulated theories and their verification; 6. Postulates for the theory of choice; 7. The estimation of parameters; 8. The nature of prediction; 9. A simple model; 10. The development of a linear model over time; 11. Prediction and economic policy; 12. Practical objections to exact models; 13. Prediction from static models; Part III. Some Illustrations of the Problems of Measurement: 14. Social Accounting; 15. The three forms of economic activity; 16. Transactions in the British economy in 1948: an example; 17. The derivation of the example from published sources; 18. The structure of transactions and some important national aggregates; 19. The group structure of transactions; 20. Systems of transactions from the viewpoint of accountancy; 21. Statistical design in social accounting; 22. Market demand from the viewpoint of economic theory; 23. Other influences to be taken into account; 24. The formulation of market demand relationships; 25. Statistical problems; 26. Demand analyses for the United Kingdom; 27. Demand analyses for the United States of America; 28. The sources used in the American analyses; 29. Concluding remarks.