The Most Important Fact About a Cluster of Stars That

question 4

Multiple Choice

The most important fact about a cluster of stars that makes them useful for studying starformation is that:

• A)all the stars formed from the same cloud.
• B)all the stars formed at about the same time.
• C)all the stars are at the same distance from Earth.
• D)all the stars have the same chemical composition.
• E)all the stars are the same spectral type.

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Definitions:

Nominal Variables

Categorical variables that have two or more categories without having a natural order or rank.

College Major

The specialized area of study or field chosen by a college or university student to focus their academic coursework and degrees.

Nominal

A level of measurement that categorizes data but does not rank them.

Dummy Variables

Variables created to include categorical data in regression models by converting categories to a binary form (0 or 1), representing the presence or absence of some categorical effect.