The Half- Life of a Radioactive Isotope Refers To

question 30

Multiple Choice

The half- life of a radioactive isotope refers to:

• A) the time it takes for half of the parent isotopes to decay to daughter isotopes.
• B) the time it takes for the ratio of parent to daughter isotopes to be 1:2 (half as many parent isotopes as daughter isotopes).
• C) one- half of the total lifespan of a parent isotope.
• D) the time it takes for the ratio of parent to daughter isotopes to be 2:1 (twice as many parent isotopes as daughter isotopes).

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Definitions:

Independent Variables

Variables in an experiment or regression that are manipulated or categorized to determine their effect on dependent variables.

Dependent Variable

The outcome variable in a study, experiment, or statistical model, whose variation depends on factors represented by independent variables.

Multicollinearity

A statistical phenomenon in which multiple independent variables in a regression model are highly linearly related, affecting the model’s accuracy.

Multicollinearity

A statistical phenomenon in which several independent variables in a regression model are highly correlated, potentially distorting the results of regression analysis.