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Theory Measurement and Mathematics
Univariate Descriptive Statistics
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05 level actually analysis of variance approximately assume assumptions cent Negro Chap chi square cluster cluster sampling column computing conﬁdence interval control variable correlation coefﬁcient covariance critical region deﬁned deﬁnition degrees of freedom difference difﬁcult discussed efﬁciency equal estimate exactly example expected ﬁgure ﬁnd ﬁrst ﬁxed ﬂips formula frequencies given guessed mean independent variables indicate interaction interval scale involves large number level of measurement linear median multiple nominal scale nonparametric normal curve null hypothesis obtain one’s ordinarily partial correlation percentages population possible predict probability of getting problem procedure proportion random sample ranks ratio regression equation relationship relatively sample means sampling distribution scores selected signiﬁcance level simple simple random sample slope speciﬁc Square root standard deviation standard error statistical statistically independent subtracting sum of squares Suppose Table theoretical tion total number type II error unexplained variation within-class zero