§ 62. Mr. Boydenasked the Secretary of State for Commonwealth Relations what is his estamate of the margin of error introduced into his migration statistics as a result of refusal of the airlines to adopt accurate methods of recording movements on their long air routes.
§ Mr. TilneyThe margin of error in Table I (b) of the Oversea Migration Board's Statistics for 1961, published as Cmnd. 1905 last December, is believed to be small. While full British statistics are only available for the long sea-routes, immigration figures received from the Commonwealth receiving countries relate to all routes. The Board is therefore able to arrive at a reasonably accurate estimate of the total, after taking into account variations in the statistical procedures used by Commonwealth countries.