Research And Statistical Methods – Psychology

Research And Statistical Methods – Psychology

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Research And Statistical Methods – Psychology

Answer the following questions below:

1. Explain what a negative correlation between depression and self-esteem means. Provide two additional examples of negative correlations in the field of psychology.

2. Provide an example of a variable measured on a(n): nominal scale, ordinal scale, interval scale, and ratio scale and discuss the strengths and limitations of each.

3. Imagine that you are writing a survey on student perceptions of the food in the dining hall. Write one open-ended, one closed-ended, and one partially open-ended question concerning quality of the food in the dining hall and discuss the strengths and limitations of each.

4. What are the problems with the following survey questions?

• Do you agree that Americans should be more concerned with conserving fuel and reducing pollution from auto emissions?

• Do you favor reducing the outrageous number of administrators in the federal government?

• Most people believe that politicians are overpaid. Do you agree?

5. Calculate s (standard deviation) and A.D. (average deviation) for the following sample: 2, 2, 6, 9, 10, 10, 15, 18, 18, 20. Provide two examples of when this would be appropriate to use in in research and two examples of when it would not be appropriate to use in research.

Two main statistical methods are used in dataanalysis: descriptive statistics, which summarize data from a sample using indexes such as the mean or standard deviation, and inferential statistics, which draw conclusions from data that are subject to random variation (e.g., observational errors, sampling variation).

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