Causation vs Association

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      Lesson summary:

      The video discusses the difference between causation and correlation and observational studies versus experiments. Observational studies only measure variables of interest and correlation does not necessarily imply causation. Experiments are performed to eliminate lurking variables that can affect the relationship between variables and to provoke a response that can be measured. The experimental unit refers to the entity being experimented on, the treatment refers to the combination of factor levels being applied to the unit, and the factor refers to the explanatory variable causing a change. The response variable is what is being compared in the study. In an example, an experiment is conducted to examine the effectiveness of brushing time and toothpaste brand on oral health, with healthy individuals being treated at each combination of factor levels and oral health being compared after one month.

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