HC Deb 20 November 1968 vol 773 c287W
Mr. Maurice Macmillan

asked the President of the Board of Trade to what extent the present methods of seasonally adjusting imports and exports on a trade account basis are the same as those described in the Board of Trade Journal of 6th November, 1959; and whether he will publish the new methods.

Mr. Dell

The methods are basically the same but some minor changes have been made. The most important is to the length of month adjustment for exports, which now reflects the present widespread practice of the five-day working week. In addition, the estimation of the moving seasonal factors has been modified to give rather greater weight to the data of recent years. An article describing the latest procedures will be published in due course.

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