STA630_Quiz # 8

Spring 2008, STA630

 

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1. In ___________, the researcher attempts to control and/ or manipulate the variables in

the study.

 

1.  Experiment

2.  Hypothesis

3.  Theoretical framework

4.  Research design

 

2. In an experimental research study, the primary goal is to isolate and identify the effect

produced by the ____.

 

1.  Dependent variable 

2.  Extraneous variable

3.  Independent variable 

4.  Confounding variable

 

3. A measure is reliable if it provides consistent ___________. 

1.  Hypothesis

2.  Results

3.  Procedure

4.  Sensitivity

 

4. The interview in which questions are already prepared is called ________.

1.  Telephonic interview

2.  Personal interview

3.  Unstructured interview

4.  Structured interview

 

5. The numerical description that describe sample may be expected to differ from those

that describe population because of random fluctuations inherent in sampling process.

1.  Sampling design

2.  Non-probability sampling

3.  Sampling error

4.  Probability sampling

 

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6. In ______________ , each population element has a known and equal chance of

selection.

1.  Purposive sampling

2.  Quota sampling

3.  Stratified sampling

4.  Simple random sampling

 

7. ______ is the evidence that the instrument, techniques, or process used to measure

concept does indeed measure the intended concepts.

 

1.  Reliability

2.  Replicability

3.  Scaling

4.  Validity

 

8. A researcher is interested in studying why the "new math" of the 1960s failed. She

interviews several teachers who used the new math during the 1960s. These teachers are

considered as:

1.  Primary sources

2.  Secondary Sources

3.  External critics

4.  Internal critics

 

9. Which of the following is NOT true about stratified random sampling?

1.  It involves a random selection process from identified subgroups

2.  Proportions of groups in the sample must always match their population

proportions

3.  Disproportional stratified random sampling  is especially helpful for getting large

enough subgroup samples when subgroup comparisons are to be done

4.  Proportional stratified random sampling yields a representative sample

  

10. Experimental design is the only appropriate design where_________ relationship can

be established.

1.  Strong

2.  Linear

3.  Weak

4.  Cause and Effect

 

 

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