Measurements Indicate That a Certain Star Has a Very High

question 158

Multiple Choice

Measurements indicate that a certain star has a very high intrinsic brightness (100,000 times as bright as the Sun) and yet is relatively cool (3500 K) .How can this be?

• A) The star must be quite small.
• B) The star must be very large.
• C) There must be an error in observation because no star can have these properties.
• D) The star must be in the upper part of the main sequence.

Comprehend the principles of gas chromatography and its application in forensic science.

Grasp the basic concepts of combustion, fire, and chemical reactions.

Learn about the storage and preservation of forensic samples.

Identify the effects of environmental factors on forensic evidence.

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Definitions:

Correlation

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

Regression

A statistical method used to model and analyze the relationships between dependent and independent variables to predict outcomes.

Regression Coefficient

A value that represents the amount by which a dependent variable changes when a related independent variable changes by one unit.

Regression

A statistical method used to determine the relationship between a dependent variable and one or more independent variables.