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If there are 19 data values, the median will have 10 values above it and 9 below it since n is odd.
Peptide Hormone
Chemical messengers synthesized as peptides and regulate physiological processes, including growth, appetite, and metabolism.
Phthalates
A group of chemicals used to make plastics more flexible and harder to break, often found in various consumer products.
PCBs
Polychlorinated biphenyls, a group of man-made organic chemicals known for their environmental persistence and potential health hazards.
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