Citing unprecedented movements of the population to areas with heavy concentrations of armaments manufacturing and responding to the administration's orders, the Census Bureau unveiled a 1941 plan to conduct an annual sample census.

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The figures are not strictly comparable, because sample surveys show the sex ratio at birth, whereas the census gives it among infants up to the age of six.

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This sample will allow the statisticians to gauge whether some particular group was miscounted in the original census.

ECONOMIST: Statistics