SOCECOL 10 Chapter Notes - Chapter 7: Null Hypothesis, Internal Validity, Type I And Type Ii Errors
1 Apr 2017
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We ask whether the experimental results, as we found them, happened not because of a crucial factor (the independent variable) but because of chance. We seek to eliminate sources of uncontrolled variance that operate in a systematic manner: third stage assumes that our results reflect an action on the part of the independent variable. Now a greater possibility that our research hypothesis is accurate. Systematic variation: for example, the influence of the independent variable on the dependent variable, once we have collected the results, we have 3 options. There are no differences between our groups (the null hypothesis) The results are produced by some systematic influence other than the independent variable (the confound) The results were produced in a systematic fashion by the independent. Non systematic variation (chance variation) variable: also called error variation, refers to the factors that influence the performance of the research participants in a nonsystematic manner.
