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Randomization in experimental research

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Reference no: EM133372044

Questions

1. What is the recommended length for a survey?

A. 10 pages

B. 2 pages

C. 20 pages

D. 4 pages

2. Which of the following is NOT a source of internal invalidity?

A. statistical control

B. external events

C. contamination

D. selection bias

3. ______ is a defining feature of a true experiment.

A. Independent variable

B. Comparison ground

C. Dependent variable

D. Random assignment

4. Randomization in experimental research ______.

A. results in a sample that can be generalized to a population.

B. precludes the detection of relatively small outcome differences with reasonable confidence

C. removes the operation of systematic bias from the assignment process

D. guarantees that the experimental and comparison grounds are identical at the start of the experiment.

5. Which of the following is NOT required for a true experiment?

A. posttest

B. Control group

C. Random assignment

D. Pretest

6. Which of the following is the cheapest type of survey?

A. in-person

B. mail

C. phone

D. electronic

7. Which of the following survey designs has the highest response rate?

A. in-person

B. electronic

C. phone

D. mail

Reference no: EM133372044

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