# Class Notes for STAT 3006 at Virginia Polytechnic Institute and State University (VT)

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## STAT 3006 Lecture Notes - Lecture 23: Variance Inflation Factor, Multicollinearity, Correlation And Dependence

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## STAT 3006 Lecture Notes - Lecture 20: Regression Analysis, Statistical Hypothesis Testing

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A leverage point is an observation with a value of x that is outlying among the x- values. An outlier is an observation of y that seems not to agree wi

View Document## STAT 3006 Lecture Notes - Lecture 14: Scatter Plot, Dependent And Independent Variables

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Two variables are associated if knowing the value for one variables gives you information about the value for the other. This is often discussed as a r

View Document## STAT 3006 Lecture Notes - Lecture 26: Confidence Interval, Statistic, Standard Deviation

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## STAT 3006 Lecture Notes - Lecture 10: Multiple Comparisons Problem, Analysis Of Variance

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To check the assumptions or normality of the response and equality of variance for the difference treatment combinations, examine the residuals. Anova,

View Document## STAT 3006 Lecture Notes - Fall 2018 Lecture 6 - Homoscedasticity, Heteroscedasticity, Analysis of variance

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Any factor effect would therefore show up in our data as the factor-driven differences plus chance variations ( error ). (cid:2202)=+(cid:2187)(cid:220

View Document## STAT 3006 Lecture Notes - Lecture 18: Homoscedasticity, Scatter Plot

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Check by using a scatterplot to make sure the relationship is clear: independence of residuals: this is difficult to tell from the plot, but you can us

View Document## STAT 3006 Lecture Notes - Lecture 13: Pie Chart, Bar Chart, Count Data

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Two variables are associated if knowing the value for one variables gives you information about the value for the other. This is often discussed as a r

View Document## STAT 3006 Lecture Notes - Fall 2018 Lecture 2 - Null hypothesis, Dependent and independent variables, Descriptive statistics

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Recall ~ when the data are obtained from random sampling, two-way tables of counts can be used to formally test the hypothesis that the two categorical

View Document## STAT 3006 Lecture Notes - Lecture 19: Homoscedasticity, Standard Deviation, Analysis Of Variance

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Statistics are the variables on the left; parameters are the variables on the right: Recall statistics are random variables (so we need to know the dis

View Document## STAT 3006 Lecture Notes - Lecture 15: Robust Statistics, Dependent And Independent Variables

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Two variables are associated if knowing the value for one variables gives you information about the value for the other. This is often discussed as a r

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