ROI, experiments and ANOVA - Experiments
5 important questions on ROI, experiments and ANOVA - Experiments
What are the 3 categories of gathering and analyzing data?
- Exploratory techniques - e.g. interviews, focus groups etc.
- Descriptive techniques - e.g. survey data, online purchase histories etc.
- Causal techniques - e.g lab experiments, test markets in the fields etc.
What 3 kinds of evidence should you find when looking at a causal relationship?
- Concomitant variation - If X causes Y, then X and Y should be correlated.
- Sequential ordening - If X causes Y, we would expect X to occur first and then Y would follow.
- Elimination of other possible explanations - If X, Q, or Z may cause Y, it would be desirable to show that Q and Z do not, leaving the X -> Y relationship most plausible.
What is external validity and why is it important?
- When the respondents are sampled randomly.
- Important because it allows for generalization of the results to the broader target population.
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What is internal validity and why is it important?
- When respondents are randomly assigned to one of the two conditions.
- It is important because it allows us to attribute the results to our intervention, not to some other confounding factor.
What are the dependent and independent variables in a study like this?
- Independent variable/explanatory factor/predictor = the thing we manipulate.
- Dependent variable/criterion measure/response function = the result we measure.
The question on the page originate from the summary of the following study material:
- A unique study and practice tool
- Never study anything twice again
- Get the grades you hope for
- 100% sure, 100% understanding
