NTA-NET (UGC-NET) Population Studies (15) Research Methodology and Programme Evaluation-Methods of Data Collection and Analysis Study Material (Page 2 of 8)

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Measuring Association Among Attributes: Regression Analysis

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Regression Analysis

Regression analysis determines regression equation, which can predict or estimate a score of one variable if the other is known. If two variables are correlated, one variable can be predicted based on the other. It was first used by Francis Galton in 1877 …

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Measuring Association Among Attributes: T-Tests

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T-Tests

It is one of the statistic used for hypothesis testing. T-test determines whether there is significant difference between two group means. It describes if two groups actually come from same population and appear different only because of chance errors. It is less likely that the difference is due to sampling errors or chance if:

  • Sample size is large
  • There is larger difference between two means
  • There is smaller variance among the participants

All t-tests involve calculating a t-value. The calculated…

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