Exam 14: Determining Relationships

In a linear relationship formula,the variable being predicted is x.

A chi-square analysis is the examination of frequencies for two metric variables in a cross-tabulation table to determine whether the variables have a significant relationship.

A ________ (where the target variable is clearly indicated,probably in the title,and the statistically significant positive and negative correlations are identified and separated)is suggested when presenting correlation findings.

Which of the following is true of the dependent variable in regression analysis?

The Pearson product moment correlation measures the linear relationship between two metric-scaled variables.

A question that asks how often a respondent purchases plane tickets would be considered:

The standard error of the estimate is used as a measure of the accuracy of the predictions in regression; it is analogous to the standard error of the mean,used in estimating a population mean from a sample.

The best communication vehicle for cross-tabulation analysis is a ________.

What is the intersection of a row and a column in a cross-tabulation table called?

Regression may be used to make general predictions; for example,there is a relationship between family size and dollar amount spent on groceries.But regression cannot be used to predict a dollar amount of groceries that families of different sizes would purchase.

The expected frequencies perfectly embody the alternative hypothesis for chi-square analysis.

Raw counts appearing in a frequency table are used by chi-square analysis as "expected frequencies."

In regression,the line that runs through the points on a scatter diagram is positioned to minimize the vertical distances away from the line of the various points because of the "least squares criterion."

A correlation coefficient,an index number constrained to fall between the range of -1.0 and +1.0,communicates both the strength and the direction of association between three or more categorical variables.

The term labels implies that the scale is metric,whereas the term levels implies that the scale is categorical.

Which of the following is a form of regression analysis where more than one independent variable is used in the regression equation?

If you wished to perform correlation analysis using your XL Data Analyst,which command sequence would you use?

In multiple regression,the multiple R is like a lead indicator.Researchers often convert it into a percent to indicate what percent of the dependent variable is explained by the multiple regression.

________ are the totals observed by counting the number of respondents who are in each cross-tabulation cell.

The XL Data Analyst performs cross-tabulation analysis and generates row and column percentage tables so that users can see the relationship patterns when they encounter a significant cross-tabulation relationship.