Table B-3c. Estimated Standard Error of Percentage for Export Shipment Characteristics by Country of Destination: Percent of Total for 2002 and 1997

Table B-3c. Estimated Standard Error of Percentage for Export Shipment Characteristics by Country of Destination: Percent of Total for 2002 and 1997

[Estimates are based on data from the 2002 and 1997 Commodity Flow Surveys. Because of rounding, estimates may not be additive]

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Country of destination Value Tons
Std. error of percent 2002 Std. error of percent 1997 Std. error of percent 2002 Std. error of percent 1997
Total
Canada 1.2 0.8 3.0 1.8
Mexico 1.4 2.2 1.2 1.6
All Others 1.1 2.2 2.9 2.7

KEY:
– Represents an estimate equal to zero or less than 1 unit of measure.
S Estimate does not meet publication standards because of high sampling variability or poor response quality.

NOTE: The Introduction and appendixes give information on confidentiality protection, sampling error, nonsampling error, sample design, and definitions. Links to this information on the Internet may be found at www.census.gov/cfs.

SOURCE: Research and Innovative Technologies Administration, Bureau of Transportation Statistics (USDOT) and U.S. Census Bureau, 2002 Commodity Flow Survey, Export Data, March 2005.