Experimental Design Flashcards
Validity
Valid if every variable was kept controlled/constant apart from one IV and one DV
Precision
How precise/close two measurements are to one another
Accuracy
How close the measurement is to the desired/expected result
IV vs DV
DV is affected and changed depending on the IV
- IV is variable being changed in experiment
- DV is what is being affected by the IV and is being measured in the experiment
Controlled variables
Not the IV and DV: ever other variable must be kept constant/controlled in an experiment
Random Errors
An unexpected error that can be improved with repetition and use of precise equipment
Systematic Errors
An error that cannot be improved with repetition
Reliability
How reliable data is - improved by repetition and large sample size
Uncertainty
The idea that all data has a range of expected values, as opposed to a precise point value
Sterilisation Methods
can be achieved through methods of heat, chemical, filtration, high pressure or irradiation treatments, to kill all life forms or biological agents
Ethical Methods
Replacement of animal research with other research wherever possible
Reduction in the number of animals used in research
Refinement of experimental techniques to minimise pain and distress
