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- W4210363420 abstract "The previous chapter considered the following problem: given a distribution, deduce the characteristics of samples drawn from that distribution. This chapter goes in the opposite direction: given a random sample, infer the distribution from which the sample was drawn. It is impossible to infer the distribution exactly from a finite sample. Our strategy is more limited: we propose a hypothesis about the distribution, then decide whether or not to accept the hypothesis based on the sample. Such procedures are called hypothesis tests. In each test, a decision rule for deciding whether to accept or reject the hypothesis is formulated. The probability that the rule gives the wrong decision when the hypothesis is true leads to the concept of a significance level. In climate studies, the most common questions addressed by hypothesis test are whether two random variables (1) have the same mean, (2) have the same variance, or (3) are independent. This chapter discusses the corresponding tests for normal distributions, called the (1) t-test (or difference-in-means test), (2) F-test (or difference-in-variance test), and (3) correlation test." @default.
- W4210363420 created "2022-02-08" @default.
- W4210363420 date "2022-01-31" @default.
- W4210363420 modified "2023-09-23" @default.
- W4210363420 title "Hypothesis Tests" @default.
- W4210363420 doi "https://doi.org/10.1017/9781108659055.003" @default.
- W4210363420 hasPublicationYear "2022" @default.
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