SCI1020 Lecture 5: Part 2b How Data is obtained
22 Dec 2018
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Have a clear question (or a hypothesis to test) Both have the goal of detecting the relationship between explanatory and response. Explanatory: the change in this variable may explain or may cause differences in respon experiment this is the variable usually manipulated and set (independent) Response: a variable whose changes we wish to study; an outcome or result that we me. How to minimise the effects of confounding and lurking variables. Researchers observe or question participant about opinions, behaviours, or outcomes. T is associated with other features observed (explanatory) Participants are not asked to do anything differently. Disadvantage: difficult to try to establish causal links. Advantage: more likely to measure units in their natural setting. Sample surveys: descri situation are like or think. The sampling method is critical to the validity of the results. Case-control studies: cases who have a particular response (eg specific medical illne.
