What Scientific Method Was First Used to Discover the Rings

question 137

Multiple Choice

What scientific method was first used to discover the rings around Uranus?

• A) X-ray photography from the Einstein satellite
• B) spacecraft exploration of the planet
• C) direct photography of the rings from Earth
• D) occultation of a star as the planet and rings moved in front of it

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Definitions:

Indicator Variables

Variables, often used in statistical models, that take on a value of 0 or 1 to indicate the absence or presence of a categorical effect that may impact the result.

Validity

The degree to which an indicator accurately measures or reflects a concept.

Reliability

The likelihood that a particular measure would produce the same results if the measure were repeated.

Indicator Variable

A variable in statistical modeling that assigns a value of 0 or 1 to indicate the non-presence or presence of a specific condition or attribute.