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t distribution
This term refers to a specific statistical tool used primarily when dealing with small sample sizes where the true population variance is unknown. It is characterized by heavier tails than a standard normal distribution, which accounts for the increased uncertainty inherent in smaller datasets.
In academic and professional research, it is almost exclusively used within the context of hypothesis testing and the calculation of confidence intervals. It is a technical term of art in statistics and is rarely used in casual conversation.
Ý nghĩa
A probability distribution that is used in statistics to estimate the population mean when the sample size is small and the population standard deviation is unknown.
The researcher used a t distribution to determine the p-value for the small sample set.