24
Apr
Confidence Interval Population Mean Calculator. This calculator will compute the 99 95 and 90 confidence intervals for the mean of a normal population given the sample mean the sample size and the sample standard deviation. Confidence Interval for Variance Calculator. Read Confidence Intervals to learn more. Enter how many in the sample the mean and standard deviation choose a confidence level and the calculation is done live.
μ M t sM In this formula M sample mean. Confidence Interval Confidence Level. Fill in the sample size n the sample mean barx the sample standard deviation s and the confidence level CL. For example for a 95 confidence level enter 095. Calculating a confidence interval involves determining the sample mean X and the population standard deviation σ if possible. First you need to calculate the mean of your sample set.
Type in the values from the data set separated by commas for example 2458112.
Use this calculator to compute the confidence interval for population variance. This simple probability calculator utilizes a t statistic and the sample means M to produce an interval estimate of a population mean μ. Confidence Interval Calculator for the Population Mean. Please enter your data into the fields below select a confidence level the calculator defaults to 95 and then hit Calculate. Write the confidence level as a decimal. With 95 confidence the population mean is between 686 and 714 based on 50 samples.