: The amount of "plus or minus" added to the sample mean. It depends on the standard deviation and the sample size. How to Calculate and Report CIs
is a foundational concept in inferential statistics used to estimate population parameters from sample data. Instead of providing a single point estimate (like just a mean), a confidence interval (CI) provides a range of values where the true population parameter is likely to lie. What is a Confidence Interval? Statistics with Confidence: Confidence Interval...
To determine a basic confidence interval for a mean, you generally need: : The amount of "plus or minus" added to the sample mean