# Confidence Interval Calculator

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This confidence interval calculator is a free online tool that is designed to help users calculate the range of values within which a population parameter is likely to fall. A confidence interval is a statistical measure that provides an estimate of the range of values for a population parameter, such as the mean or proportion.

This confidence interval calculator is useful in various fields, including finance, economics, and social sciences, among others. It can help researchers and analysts determine the precision of their estimates and make more informed decisions based on the data.

To use this confidence interval calculator, the user inputs the sample size, the sample mean or proportion, the level of confidence desired, and the standard deviation of the population or sample. The calculator then uses a mathematical formula to calculate the lower and upper bounds of the confidence interval.

This confidence interval calculator can be used to calculate confidence intervals for various population parameters, including means, proportions, and standard deviations. It is an essential tool for researchers and analysts who want to ensure their estimates are reliable and accurate.