confidence interval definition by American Heritage Dictionary
nounThe American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
A statistical range with a specified probability that a given parameter lies within the range.
confidence interval - Business Definition
In statistics, the range of values with a specified probability of a parameter falling within the range. The larger the confidence interval, the less the power of a study to detect differences between groups.