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Technological change can reduce the inflationary effects of total spending rising over time.
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.
Kruskal-Wallis Test
A non-parametric statistical test that compares three or more independent samples to determine if at least one sample distribution stochastically dominates one other sample.
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