Running Head : Statistics[Name]May 20091 .-The z-scores are used when determining how get along a data point is from the mean of the population in terms of number of standard balances . When taking only a adjudicate of that population and obtaining the try mean and standard excursus of that sample , the t-score is used instead of the z-score for determining how far a score in that sample is away from the mean of that sample in terms of the number of sample standard deviations . This performer that z is to population as t is to sample . On the other hand , while both scores brainiac the distance of a data point from the center , the percentile rank indicates how many data points are lower than a particular data point . Thus , a 99th percentile rank means that the point is part of the top 1 of all data points (Freedman et . al 20072 .
-When there are 2 main(a) variables , the bipartisan analysis of variance should be used . A two-way ANOVA considers two independent variables , one delineated by the rows and the other represented by the columns . When there are more than than two variables , n-way ANOVAs are considered , where n refers to the number of independent variables . Since ANOVA and t-test are both parametric tests , they both train the assumptions of atomic number 7 and random sampling . However , a fundamental difference resulting from an ANOVA test would still need a carry hoc test such as the Scheffe...If you want t o hold up a full essay, order it on our web! site:
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