Accuracy - relates to how close it is to the true value of the quantity being measured., True value - the value, or range of values, that would be found if the quantity could be measured perfectly, Precision - Refers to how closely a set of measurement values agree with each other., Systematic errors - errors in data that differ from the true value by a consistent amount. E.g. researcher error or incorrect measurement instrument calibration, Random errors - errors in data that are unsystematic and occur due to chance. E.g. Varying measurement procedures, faulty measurement tools, differences between participants and environmental differences., Uncertainty in data - refers to the lack of exact knowledge relating to something being measured due to potential variation in knowledge. Reflects the lack of exact knowledge regarding the true value., Repeatability - is the extent to which successive measurements or studies produce the same results when carried out under identical conditions. , Reproducibility - is the extent to which successive measurements or studies produce the same results when repeated under different conditions., Internal validity - the extent to which an investigation truly measures or investigates what it claims to., External validity - the extend to which the results of an investigation can be applied to similar individuals in different settings.Only considered when internal validity is present.  ,

VCE PSY 3/4: Evaluating Research Data and Investigation Methods

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