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Research Methods Summary

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Summary Research Methods, Part 1, p. 57 t/m 85, p.117 t/m 128, p. 132 t/m 149 p. 153 t/m 177 p. 126 t/m 129, 203 t/m 226 p. 244 t/m 256 p. 179 t/m 199, 226 t/m 227

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  • October 7, 2019
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  • 2019/2020
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Available practice questions

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Some examples from this set of practice questions

1.

What does operationalize mean?

Answer: To turn a concept of interest into a measured or manipulated variable.

2.

A claim is an argument someone is trying to make. There are three sort of claims. Name and explain them.

Answer: 1. Frequency claims: merely gives a percentage. Focus only on one variable. (15% of students smoke) 2. Association claims: it suggest that two variables go together but does not claim that there is a causal correlation. 3. Causal claims: cause is improved.

3.

What is the difference between validity and reliability?

Answer: Reliability: how consistent are the results of a measure? Validity: is the operationalization measuring what it is supposed to?

4.

Which term is described: you claim that there is an association between two variables but there is no association between the two variables.

Answer: Type one error

5.

Describe the differences between the three types of quantitative variables.

Answer: Ordinal: numerals represent a ranking order. Distance may not be equal. Interval: subsequent numerals represent equal distances, no true zero point. Ratio: there is a true zero point.

6.

What does R measure?

Answer: R is a single number to indicate how close the dots on a scatterplot are to a line drawn trough them

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