Examlex
The present value of an annuity is the value today of a series of future payments discounted using a compound interest rate.
Test Statistic
A value calculated from sample data during a hypothesis test that is compared to a threshold value to decide whether to reject the null hypothesis.
Wilcoxon Signed Rank Sum Test
A statistical test that doesn't rely on parameters to compare two matched groups, aiming to determine if there is a difference in their population mean ranks.
Normal Approximation
A technique in statistics where a binomial distribution is approximated using a normal distribution, applicable under certain conditions, such as a large sample size.
F-distribution
A probability distribution used in analysis of variance (ANOVA), especially relevant when comparing variances across different samples.
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