It is appropriate to use "dummy variables" in multiple regression when

a. there may be a nonlinear relationship between the independent variables and the dependent variable.
b. all independent variables are interval or ratio.
c. some of the independent variables are categorical.
d. there may be nonnormality in the independent variables.


C

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Confidence intervals are?

A. A range within which the researcher believes the true mean value will fall B. Boundaries to prevent the true mean value being calculated C. Calculating all of the mean values of the various sample populations D. Limiting the number of sample populations studied

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In what way is careful accounting of recruitment expenses essential to providing information about the costs and benefits of the recruitment process?

What will be an ideal response?

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__________ occurs as part of teacher-assistance problem-solving teams and are often used to address school-wide issues

a. Professional learning communities b. Collaborative teams c. Induction and mentoring d. Teacher-to-teacher consultation

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While writing her paper, Susan has found a source that she would like to use. Susan, paraphrase's the information in her paper. Is this sufficient to avoid plagiarism, and if not, what should Susan do?

A. Although Susan has restated the information in her own words, she still needs to give proper credit. B. As long as Susan has restated the information in her own words she is fine. C. If Susan has placed the information in quotes, then she has properly provided credit. D. Susan cannot use the information and so must find another source.

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