Please note that ACS 1-Year Data may return the following in place of data:
ACS 1-Year Data contain variables ending in E, EA, M, MA, PE, PM and SS. See the table below for each variable type and its meaning:
|Variable Type||Title||Related Products||Meaning|
|E||Estimate||Summary Files, Subject Tables, Data Profiles, Comparison Profiles||A numeric representation of the estimate.|
|EA||Estimate Annotation||Subject Tables, Comparison Profiles||A character representation of the estimate. If an Estimate Annotation exists, use this value in place of the Estimate. (See Example #1 below)|
|M||Margin of Error||Summary Files, Subject Tables, Data Profiles||A numeric representation of the margin of error.|
|MA||Margin of Error Annotation||Subject Tables Only||A character representation of the margin of error. If a Margin of Error Annotation exists, use this value in place of the Margin of Error.|
|PE||Percent Estimate||Data Profiles Only||An estimate representing a percent of the total.|
|PM||Percent Margin of Error||Data Profiles Only||The Margin of Error for the corresponding Percent Estimate (PE) variable|
|SS||Statistical Significance||Comparison Profiles Only||Returns ‘*’ or ‘c’ representing the Statistical Significance for the corresponding estimate (E) variable. (See Example #2 below)
An * indicates that the estimate is significantly different (at a 90% confidence level) than the estimate from the most current year. A "c" indicates the estimates for that year and the current year are both controlled; a statistical test is not appropriate.
Figure 1: Visual Representation of S0101_C02_031E/A from American Factfinder
In the following example, the variable S0101_C02_031EA returns “(X)”. Using the notes above, this indicates that the estimate is not applicable or not available. Since S0101_C02_031E represents the Sex Ratio (males per 100 females) and the column is for Males only this estimate is not applicable. S0101_C02_031E returns -888888888 as a caution not to use this estimate in reporting or further calculations. See Figure 1 above for a visual context for this estimate.
Figure 2: Visual Representation of CP02_2015to2014_001SS from American Factfinder
In the following example, the variable CP02_2015to2014_001SS returns “*”. Using the notes above, this indicates that the 2015 estimate for Total households is significantly different when compared to the 2014 estimate.
See the table below for a list of common Estimate/Margin of Error (E/M) values and their corresponding Annotation (EA/MA) values. See section above titled “Notes on ACS 1 Year Data” for Annotation Values and its meanings.
|Estimate Value||Annotation Value|