tillitsintervaller
Tillitsintervaller, or confidence intervals in English, are a fundamental concept in statistical inference. They provide a range of plausible values for an unknown population parameter, such as the population mean or proportion, based on sample data. Instead of reporting a single point estimate, which is unlikely to be exactly correct, a confidence interval acknowledges the uncertainty inherent in using a sample to represent a whole population.
A confidence interval is calculated from sample statistics and includes a confidence level. The confidence level,
The width of a confidence interval is influenced by two main factors: the variability in the data