Stats Exam #4: Chi-Square, Linear Regression, ANOVA

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8 Terms

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Z-stat

Population standard deviation is known

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T-stat

Only the sample standard deviation is known

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Goodness of fit

Does the observed distribution fit/follow the expected distribution?

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Independence

Are two variables independent of each other?

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Homogeneity

Do two different populations behave the same with respect to a given categorical variable?

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ANOVA

Is at least one of the means of these three or more populations significantly different?

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Correlation coefficient

Value that determines the strength and direction of a linear regression; r; 0= no correlation

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Variation between groups/ variation within groups

F stat=