Reliability of the estimates . All estimates from a sample survey are subject to sampling and other types of errors. Survey data are also subject to non-sampling errors, such as those which can be introduced into the data collection and processing operations. Estimates not directly derived from sample surveys are subject to additional errors resulting from the special estimation processes used. The sums of individual items may not always equal the totals shown in the same tables because of rounding.
Employment estimates .
Measures of sampling error are not available for state CES data, but the relatively large size of the samples maintained by the state agencies and the annual adjustment of employment estimates to more recent benchmark levels assure a high degree of accuracy. Information on recent benchmark revisions for states is available upon request. Definitions Employment data refer to persons on establishment payrolls who receive pay for any part of the pay period which includes the 12th of the month, except for Federal Government employment, which represents the number of persons who occupied positions on the last day of the month.