# 加拿大论文代写测试统计

The alternate hypothesis is represented by the symbol H1. The alternate hypothesis is also defined as the variations in outcomes between conditions are due to the independent variable. The alternative hypothesis can be non-directional and directional. The alternate hypothesis is non-directional because it does not denote the direction of the effect. If the hypothesis denotes the effect direction then it is a directional hypothesis. The alternate hypothesis refers that there will be some type of alterations. It does not denote whether the effect will be decreased or increased test scores. In some instances it is proper for the alternate hypothesis to denote the effect direction. For instance if the researcher hypothesizes that the supplement will increased the test scores then this kind of hypothesis outcomes in a directional hypothesis test which will be investigated briefly and for non-directional tests the hypothesis denotes that the treatment has some effect H1 or has no effect H0 (Brase and Brase, 2011, p 411; Pagano, 2008, p 242).

Test Statistics
In statistics the normal procedure is to evaluate a particular quantity referred to as test statistic. There are many common test statistics. The test statistic is configured so that if the null hypothesis is true and the test statistic will be a random variable that exists from a known distribution (Downing and Clark, 2010, p 298). The test statistic is wholly associated with particular statistical procedures and which has their own distributions of sampling.

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