Calculator to compute the confidence interval or margin of error of a sample based on the desired confidence level. It also provides an error bar diagram.

confidence level Calculator. Computes the mean confidence interval and the standard deviation confidence interval using the confidence level and raw data or sample statistics. Both R code and …

The confidence interval calculator finds the confidence level for your data sample.

The Confidence Interval Calculator allows you to compute the confidence interval of a mean by providing the standard deviation, mean, and sample size. Alternatively, if you don’t know the aforementioned …

Read Confidence Intervals to learn more. Use the Standard Deviation Calculator to calculate your sample's standard deviation and mean. Caution: you should really use the standard deviation of the …

Click the "Calculate" button to generate your confidence interval. The results will show the lower and upper bounds of your confidence interval, along with the margin of error and other relevant statistics.

A 95% confidence interval is one of the most widely used statistical tools for estimating population parameters from a sample. Whether you’re a student, researcher, data analyst, or business …

The confidence interval gives a range of values the population parameter is likely to be in. The likeliness that the interval contains the parameter is determined by the confidence level.

Calculate 90%, 95%, or 99% confidence intervals instantly. Input sample mean, SD, and size to get accurate bounds, margin of error, and interpretation. Perfect for researchers & students!

Use this confidence interval calculator to easily calculate the confidence bounds for a one-sample statistic or for differences between two proportions or means (two independent samples).