Examlex
________ pollutant levels cause gradual deterioration of a variety of physiological functions over a span of years.
Matched Pairs
A study design where subjects are paired based on certain criteria, ensuring that each pair is similar except for the treatment given.
Mean Difference
The average difference between two sets of data points, often used in comparing the means from two samples.
Independent Populations
Populations that have no influence on one another, implying that the selection from one population does not affect the selection from another.
Significance Level
A threshold in hypothesis testing that determines whether the observed results are statistically significant.
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