The Presence of 180-Million-Year-Old Salt Domes in the Gulf Coast

question 10

Multiple Choice

The presence of 180-million-year-old salt domes in the Gulf Coast region of the United States indicates that

• A) the area was once volcanically active.
• B) the area was subjected to plate collisions which caused metamorphism to occur.
• C) subsidence is now occurring due to the withdrawal of magma from the region.
• D) a sea used to cover the area but subsequently evaporated.

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Definitions:

Dependent Variable

The variable in an experiment that is expected to change as a result of manipulations to the independent variable.

Residual

The difference between observed and predicted values in a regression analysis.

Regression Source Table

A tabular representation in regression analysis that summarizes the sources of variation in the data, including measures like the sum of squares due to regression and residual error.

Slope Significant

An indicator that the slope of a regression line is significantly different from zero, suggesting a meaningful relationship between variables.