Radiometric Dating Is a Technique Used to Determine the Age

question 38

Multiple Choice

Radiometric dating is a technique used to determine the age of rocks.Geologists have used this technique to determine that

• A)Earth is about 6.2 trillion years old,and life appeared on Earth about 4.9 trillion years ago.
• B)Earth is about 4.6 billion years old,and life appeared on Earth about 3.4 billion years ago.
• C)Earth is about 4.6 million years old,and life appeared on Earth about 4.4 million years ago.
• D)Earth is about 6.2 thousand years old,and life appeared on Earth about 6 thousand years ago.

---

Definitions:

Variance Accounted

The proportion of total variation in a dataset that is explained by a statistical model.

Correlation

A statistical measure that expresses the extent to which two variables change together; indicating the strength and direction of a relationship.

Coefficient of Determination

A statistic that indicates the proportion of the variance in the dependent variable predictable from the independent variable(s).

Correlation

A quantitative measure that indicates the extent to which two or more variables fluctuate together.