Stöðuhlutfall

Stöðuhlutfall, also known as the standard error of the mean, is a statistical measure used to estimate the accuracy of the sample mean as an estimate of the population mean. It quantifies the variability of the sample mean, providing an indication of how much the sample mean is expected to differ from the true population mean. The standard error of the mean is calculated by dividing the standard deviation of the sample by the square root of the sample size. This measure is particularly useful in hypothesis testing and confidence interval estimation, as it helps to determine the precision of the sample mean as an estimate of the population mean. A smaller standard error indicates a more precise estimate, while a larger standard error suggests greater uncertainty. Stöðuhlutfall is widely used in various fields, including social sciences, natural sciences, and engineering, to assess the reliability of sample data and make informed decisions based on statistical analysis.