AP (Advanced Placement) Psychology History, Approaches & Research Methods-Statistics, Research Methods & Ethics Revision (Page 1 of 2)

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# What is a Research Design?

Search design refers to what does a researcher do in order to get at the logic of his hypothesis. Different questions call for different approaches, and some approaches are more “scientific” than others.

Scientific approach to the study of psychology involves:

• A testable hyp

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# Understanding Research Designs

• Researcher are generally interested in how an independent variable affects a dependent variable in a population. But sometimes it is not possible to include all units of population in study and hence only a part of it which is known as sample is used. This sample should represen

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# Introducing the Fundamental Terms in Research Problems

• Acquiescence: When people agree with opposing statements.
• Cohort effects: The effects that might result when a group is born and raised in a particular time period.

• Demand characteristic: When subjects act in the manner what is demanded by the researcher.

• Experimenter

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# Introducing the Fundamental Terms in Statistics

Statistics is the process of representing numerical data so that it can be interpreted. Good statistics help derive a conclusion of the sample. The five most common forms of descriptive statistics are:

Percentiles are used most commonly on standardized tests. They state where y

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# Normal Distribution Curve and T Score

• The normal distribution, also known as the bell curve, is quite important.
• It is unimodel distribution having mean, median and mode at the center of the distribution with majority of the values in between and few at extreme ends.
• Z-scores refers to how many standard deviations

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