Confidence Interval Calculator

The Confidence Interval Calculator is a useful online tool that allows researchers, statisticians, and data analysts to estimate the range of values that a population parameter is likely to fall within. A confidence interval (CI) is a range of values that is likely to include an unknown population parameter with a certain level of confidence. This level of confidence is typically expressed as a percentage and is known as the confidence level.

The Confidence Interval Calculator is designed to calculate the confidence interval for a given sample mean, sample size, and population standard deviation or sample standard deviation. The calculator uses a standard normal distribution to estimate the confidence interval for the population mean, assuming the sample size is large enough to satisfy the Central Limit Theorem.

Users can input the required values into the calculator, select the desired confidence level, and the calculator will provide the lower and upper bounds of the confidence interval. The results are displayed in an easy-to-understand format, making it a valuable tool for researchers who need to make statistical inferences about population parameters with limited sample data.

In summary, the Confidence Interval Calculator is a reliable online tool that provides researchers and statisticians with an efficient way to estimate the range of values that a population parameter is likely to fall within with a specified level of confidence.