Examlex
A t-test may be conducted to detect differences between two groups in which participants are only tested once.
Margin of Error
A statistic expressing the amount of random sampling error in a survey's results, indicating how much the survey results may deviate from the actual population values.
Construct Validity
The degree to which a test measures what it claims to measure, reflecting the accuracy of the concept being evaluated.
Systematic Bias
A consistent and repeatable error in judgment or decision-making that deviates from accuracy due to certain predetermined factors.
Random Sampling Error
The error in statistical analysis that results from the selected sample not perfectly representing the entire population.
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