Instructions: Use this step-by-step Confidence Interval for Mean Calculator, with known population variance, by providing the sample data in the form below
Enter the confidence level, sample size, sample mean, and standard deviation to find the confidence interval using the calculator below. Confidence Level: Sample Size (n): Sample Mean (x̄): Standard Deviation (σ): Results: Confidence Interval: Lower Bound: Upper Bound: Margin ...
Use the Standard Deviation Calculator to calculate your sample's standard deviation and mean.Caution: you should really use the standard deviation of the entire population! But you can use the standard deviation of your sample if you have enough observations: at least n=30, the more the better...
Confidence Interval Calculator Our online Confidence Interval Calculator helps you in calculating the confidence interval or the margin of error by assuming the sample mean. This tool also enables you to find the confidence interval even if you only have raw data. Sample Mean (x) Sample Size (n...
This calculator will compute the 99%, 95%, and 90% confidence intervals for the mean of a normal population when the population standard deviation is known, given the sample mean, the sample size, and the population standard deviation.
Instructions:Use this Confidence Interval Calculator to compute a confidence interval for the population mean \(\mu\), in the case that the population standard deviation \(\sigma\) is known. Please type the sample mean, the population standard deviation, the sample size and the confidence level...
Confidence Interval: This Confidence Interval Calculator calculates the confidence interval for group of data, given we have the mean, standard deviation, and sample size for the data unit. The confidence interval allows us to quantify how confident we can feel a group of data is from its mean...
Calculate confidence interval. Confidence Interval Calculator Confidence Level: Population:Leave blank if you don't know population size or it's very big. Sample Size: Percentage:% Embed Confidence Interval Calculator Widget About Confidence Interval Calculator ...
This simple confidence interval calculator uses a Z statistic and sample mean (M) to generate an interval estimate of a population mean (μ).Note: You should only use this calculator if (a) your sample size is 30 or greater; and/or (b) you know the population standard deviation (σ),...
Confidence interval calculator, formulas, step by step calculation, real world and practice problems to learn how to find the statistical accuracy of a survey-based estimate by using the input values of confidence level, sample size, population and perce