The Review of Economics and Statistics Vol. 5 No. 3 1923
The Revised Index of General Business Conditions
Abstract
W pi THEN, in i919, the post-war Index Chart IV Vof General Business Conditions was constructed, the following statements were made: In order to interpret current data it was found necessary to estimate the level of prices.... The trend thus found is, frankly, a forecast which will be revised as new data become available. 1 . . . the readjustments from the extraordinary war period continue, it is necessary to repeat the cautionthat the conclusions to which the index points, rest upon a narrower basis than those for pre-war years, and are provisional and subject to revision. 2 The index constructed in July i919 was published in the Harvard Economic Service until May i9, I923. Since that date a revised index has been published currently, instead of the index constructed four years ago. The revised index chart, printed on page I79, is constructed according to the same principles as those used in the chart it displaces. Identical or similar statistical series are utilized; the same sequence of movements obtains; and the same methods of interpretation are applicable. The changes in the base lines, or lines of trend of the constituent series, and the use of units of measurement depending upon post-war fluctuations have resulted in a more convenient arrangement of the curves. The amplitude of the fluctuation for all three revised curves is approximately between -2 and +2 units of standard deviation. This. facilitates comparison of the direction and extent of movements of the curves a comparison which is of primary importance in making forecasts of business conditions.3 The data which have become available since the end of the war make it possible to determine base lines or lines of secular trend of the constituent statistical series with more confidence than was possible in i919. Especially in the cases of commodity prices and money rates, new data and a novel and effective device for eliminating secular trend (and yet preserving the cyclical fluctuations) give us confidence in our results. Further, the influence of income tax paymentsa non-business element which augments bank clearings and bank debits four times a year can now be appraised and allowed for.4 The statistical series utilized in our revised index chart include only bank debits, stock prices, commodity prices, and money rates. Curve A, speculation, is based upon New York bank debitsand industrial stock prices; 6 curve B, business, upon outside bank debits and commodity prices; and curve C, upon commercial paper rates. The constituent curves of each group are given in Chart i. Other loans (chiefly commercial) of reporting member banks of the federal reserve system are presented in that chart with money rates, but this series does not enter the average because it has become available only since i919, and there is not, as yet, sufficient evidence of the persistent similarity of its fluctuations with those of money rates to warrant its inclusion in curve C. Chart 2 shows the three volume-series plotted together and, in the lower section, the three priceand money-rate series. Asummary statement of the data and methods used appears in Table 2, page I93, and the adjusted items may be found in the Supplement for June I923, page i67. The revised index for i900-I4 constructed in the same manner as that for I919-23 is given in
- DOI
- 10.2307/1928889
- Volume
- 5
- Issue
- 3
- Pages
- 187
- Sources
- openalex crossref