Questions Uploads

MANOVA

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Question

In conducting a MANOVA on a cluster of five related variables, a researcher obtains an F value that is

significant at the .01 level. What is the next step that should be taken in analyzing the data?

a. Reexamine the cluster to see if any variables should be removed.

b. Test for the equality of group dispersions.

c. Compute a mean vector score for each variable.

d. Conduct an ANOVA on each dependent variable in the cluster

 
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The test for homogeneity of independent variances

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Question

The test for homogeneity of independent variances, the test for homogeneity of related variances, and

the F maximum test for homogeneity of variance are all forms of

analysis of covariance.

nonparametric statistics.

analysis of variance.

multivariate analysis of variance.

 
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Multiple regression

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Question

Multiple regression, path analysis, hierarchical linear modeling, and structural equation modeling are similar in

that all of them

a incorporate multiple criterion variables into their equations

b involve the analysis of relationships among three or more variables

c. do not rely on theory to determine which variables should be measured

d. all of the above.

To determine the correlation between a dichotomous criterion variable and set of predictor variables, which test would be most appropriate?

a. Canonical correlation

b. Logistical regression

c. Multiple linear regression

d. Factor analysis

obj. 8) An important reason for making a scattergram is that it

a. provides a test of the statistical significance of the obtained correlation coefficient

b. provides a measure of the confidence limits for the obtained correlation coefficient

c. is helpful for detecting nonlinear relationships

d. estimates the amount of shrinkage in a correlation coefficient when cross-validated.

A scattergram provides a visual representation of

a. the causal relationship between two measured variables

b. the standard error of measurement for two measured variables

c. a positive or negative relationship between two measured variables

d. the results of a path analysis.

 
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variables

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Question

In research investigating relationships between variables, it is best ifa. the research sample is

homogeneous with respect to major demographic variables

b..the number of variables is approximately the same as the number of individuals in the sample

c. the researcher uses the individual as the unit of statistical analysis

d. the researcher uses the group as the unit of statistical analysis.

Suppose a researcher generates a correlation matrix for four variables. How many correlation coefficients would be in the matrix?

9

6

4

10

A limitation of the shotgun approach to identify variables that correlate with a criterion variable is that

a. it cannot detect whether the observed relationships are positive or negative

b. it cannot detect the magnitude of the observed relationships

c..only a few variables can be accommodated in the research design

d. some of the many measured variables are likely to correlate with the criterion by chance.

If every increase in score on a test of literary knowledge is accompanied by an increase in score on an intelligence test, one can conclude that

a. there is a perfect negative relationship between literary knowledge and intelligence

b. there is no relationship between literary knowledge and intelligence

c. the correlation between the literary knowledge test and the intelligence test is 1.00

d. intelligence causes literary knowledge.

 
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