Exam 14: Bivariate Statistical Analysis: Tests of Association

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Under which of the following condition should the researcher examine the data for problem?

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The Chi-square test tests the goodness of fit of the observed distribution with the expected distribution.

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If r = 0, it indicates that the two variables under study are interdependent.

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Bivariate regression can be applied on two metric variables.

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When the correlation between two variables is +0.52 and its associated significance level (p-value) is 0.153, it is implied that:

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The Chi-square test analyses the significance of the data in an R x C contingency table, in which R stands for row and C stands for column.

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In a regression equation, if the average value of Y is 15.6, the average value of X is 5.3, and the y-intercept is 8.5, then the slope is approximately:

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The Pearson's correlation coefficient is a statistical measure of causality between two variables.

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Correlation and regression analysis can be used to test for simple associations between two nominal variables.

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In the regression equation, is the symbol for the: Y=α+βX,αY = \alpha + \beta X , \alpha

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In situations in which the data are ordinal, the Pearson correlation technique may be used.

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If the relationship between two variables is such that both variables are caused by a third variable, then the original relationship between the first two variables is said to be:

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In regression analysis, the error of a predicted score is found by subtracting the predicted value of Y from the actual value of Y.

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If there is no relationship between two variables, then the Pearson's correlation coefficient between them will be:

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A researcher would like to test whether or not gender (that is, male or female) is related to brand awareness (that is, aware or unaware). Which of the following statistical tests would you suggest?

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Suppose that two groups of consumers (for example, males and females) are asked to rank, in order of preference, the brands of a product class (for example, microwave meals). Which statistical test would be appropriate to determine the agreement between the two groups?

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Two groups of students - those looking to study science degrees and those looking to study business degrees - are asked to rank, in order of preference, the universities they are applying for. The researcher then wants to determine the correlation between the two groups. Which statistical test is most appropriate?

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In regression analysis, the deviation not explained by the regression is known as the:

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If the correlation between X and Y is -0.42, approximately what percentage of the variance in Y can be explained by X?

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In correlation analysis, the null hypothesis is typically stated as ρ = 0.

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