In a Standard detion of 2, confidence limit is
Normal Curve This is a normal distribution curve in which 95% of the population falls between -2SD and +2SD. Confidence limits are the upper and lower boundaries of a confidence interval. Confidence interval is the interval within which a parameter value is expected to lie with ceain confidence levels, as could be revealed by repeated samples.
68.30%
95.40%
99.70%
76.20%
Normal Distribution, Skewed Distributions