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49. Which analysis should the experimenter conduct to test the hypothesis? Z test Repeated Measures T...

49. Which analysis should the experimenter conduct to test the hypothesis?

Z test

Repeated Measures T test

Single Sample T test

Independent samples T test
Math   Statistics-And-Probability   
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Answer #1

Depends on what type of experiment the researcher is doing.

  • Z-test: It is used when we know the population variance and can be used for testing hypothesis against one population parameter or testing the difference between the two population
  • Repeated Measures t-test or Related Samples t-test: It is used when we compare the mean difference between two data sets. The same subject is measured twice, once in one condition and 2nd in different conditions. Samples are related
  • Single Sample t-test: It is used when we want to find whether the population parameter such as the mean is different from a hypothesized value. It is used when we don't know the population variance or the sample size is very less
  • Independent Samples t-test: It is used when we compare the mean difference between two data sets. In this case, the subjects are different in both cases. Samples are independent
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