Calculating Measures of Error for Aggregated Count Data

This tool lets you combine many estimates with margins of error into one aggregated estimate with a new margin of error. For example, you could use it to combine populations of certain Hartford Census Tracts to get an estimated population of the neighborhood in Hartford with the proper margin of error.

Use the text area to insert your CSV-formatted data. The first column should contains estimates and the second column should contain respective margins of error.