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

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What is Inferential Statistics?

  • Inferential statistics allow you to generalize findings from a sample to a population that is the larger group from which the sample was drawn. Statistics refer to numbers that describe a sample, and parameters refer to numbers that describe populations.
  • Researchers can general

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Test of Significance and its Types

Which tests of significance you use depends on the characteristics of your sample and of your dependent variable. The most commonly used tests of significance are the followings:

  • T-tests compare the means of two different groups to see if the two groups are truly different i.

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Understanding Reliability and Validity – Its Types

Statistics are an important part of creating new tests or measures. They ensure that the measures are on target.

Tests are standardized (or tried out on huge groups of people) and generalized so that they create norms.

  • Criterion-referenced tests measure your ability or how m

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