According to the Tully-Fisher Relation, the Rotational Speed of a Spiral

question 88

Multiple Choice

According to the Tully-Fisher relation, the rotational speed of a spiral galaxy, as indicated bythe broadening of spectral lines, allows us to determine the galaxy's

• A)luminosity.
• B)color.
• C)redshift.
• D)mass.
• E)shape.

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Definitions:

Within-group Variability

The amount of variance within a single group of data points, indicating how much individuals in the group differ from each other.

Effect Size

A quantitative measure of the magnitude of a phenomenon or the strength of the relationship between variables in statistics.

0%-100%

A range often used to describe probabilities, percentages, or to measure data on a scale from zero to full value.

Union Membership

Refers to individuals who are part of a labor union, an organization that represents workers' interests in negotiations with employers.