todennäköisyysvälejä
todennäköisyysvälejä, known in English as confidence intervals, 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 a sample from that population. Instead of providing a single point estimate, a confidence interval acknowledges the uncertainty inherent in sampling.
A confidence interval is constructed around a sample statistic and is associated with a confidence level, typically
The width of a confidence interval is influenced by several factors, including the variability of the data