If a Rock Sample Contains Uranium and Lead, and Lead-204

question 11

Multiple Choice

If a rock sample contains uranium and lead, and lead-204 is present, then

• A) both radiogenic and primordial lead are present.
• B) all the lead is primordial.
• C) neither radiologic nor primordial lead is present.
• D) all the lead is radiogenic.

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Definitions:

Degrees of Freedom

The number of independent values or quantities that can vary in an analysis without breaking any constraints, often associated with statistical calculations.

F-distribution

A probability distribution used in statistics to model the ratio of variances among variables, often utilized in the analysis of variance (ANOVA).

F-test

A statistical test used to compare the variances of two populations to ascertain if they come from distributions with equal variances.

Population Variances

Population variances measure the degree to which individuals within a population differ from the population mean, indicating the distribution's spread.