While adding together two or more data points is simple, calculating the new margin of error requires a complex mathematical formula. The widget below will do the math for you!
1. Select the number of data points you want to combine.
2. Enter each percent (%) or dollar amount ($) and its margin of error (MOE).
Important: Only include numbers. Include a zero before the decimal point for
numbers less than one. Do not include a comma, or $, % or +/-.