Note on Seasonal Corrections : Trade of Primary Producing Countries

Extract

In this issue, the quarterly figures for exports and imports of primary producing countries given in the Statistical Appendix (tables 24 and 25) are seasonally adjusted. Table 1 shows the seasonal corrections applied, and gives some measure of their reliability. Seasonal adjustments were also calculated for a number of series not given in the Economic Review—notably for some primary producing countries' exports of certain commodities, such as cocoa and wool (table 1, part II). Chart 1 shows the adjusted and unadjusted lines for the total exports of the overseas sterling area, and also for some of the other series where the seasonal fluctuations are most marked.