The Observed Evidence We Have for Black Holes Includes

question 22

Multiple Choice

The observed evidence we have for black holes includes

• A) visible light that is thought to come from the center of a black hole.
• B) X-rays that are thought to come from the center of a black hole.
• C) temperature measurement of certain extremely cold stars that are thought to be black holes.
• D) X-rays that are thought to come from gases that are outside of a black hole.
• E) observations of certain regions of space, larger than the largest known stars, that emit no light.

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Definitions:

Least Squares Regression

A statistical method for estimating the relationships among variables by minimizing the square differences between observed and predicted values.

Coefficient Of Determination

A measure used in statistical analysis that assesses how well a model explains and predicts future outcomes, often represented as R^2.

Correlation Coefficient

A numerical measure that quantifies the strength and direction of a linear relationship between two variables, ranging from -1 to 1, where values close to 1 or -1 indicate a strong linear relationship.

Linear Relationship

A type of relationship between two variables where the change in one variable is consistently associated with a change in the other variable in a manner that can be depicted with a straight line.