Reporting And Evaluating Experimental Design Flashcards
What should a method section contain and why
Sufficient information to allow another investigator to repeat the work
What should the experimental design do
Should address the intended aim and test the hypothesis
It should allow the treatment effects to be compared to controls
How should confounding variables be addressed in a report
Taken into account or data derided across treatments
When is validity compromised in a report
When factors other than the independent variable influence the value of the dependent variable
What has to be evaluated in an experimental design
Validity and reliability
When is an experimental design invalid
When it does not address the intended aim or test the hypothesis
What is selection bias definition
The selection of a sample in a non-random way, so that the sample is not representative of the whole population
What should treatment effects be compared to
Controls
What effect does selection bias have on size of representative sampling
Sometimes Prevent a representative sample being selected
What can happen when sample size doesn’t have bias
My not be sufficient to decide whether the change to independent variable has caused an effect in the dependent variable
