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Stratified sampling results in a greater degree of representativeness but at the same time increases the probable sampling error.
Silver
A precious metal with the chemical symbol Ag and atomic number 47, known for its high conductivity, malleability, and antibacterial properties.
Selenium
a chemical element with symbol Se and atomic number 34, known for its role in antioxidant enzymes and its toxicity in large amounts.
Atomic Symbol
A notation of one or two letters representing a chemical element (e.g., O for oxygen, Ag for silver).
Tungsten
A chemical element known for having the highest melting point of all the non-alloyed metals, making it excellent for use in high-temperature applications.
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