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The primary source of smog-causing pollutants is
Sampling Error
The error caused by observing a sample instead of the whole population, affecting the precision of statistical estimates.
Population Standard Deviation
The square root of the variance in a population, reflecting how much individual data points in the entire population deviate from the population mean.
Confidence Level
The degree of certainty or probability with which a parameter of a population is estimated.
Sample Size
The number of observations or data points that are included in a sample for analysis.
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