In Order to Measure the Speed of the Sun,we Must

question 95

Multiple Choice

In order to measure the speed of the Sun,we must have a rest frame to use as a reference.What rest frame is used for this measurement?

• A) the average velocity of nearby galaxies
• B) the black hole at the galactic center
• C) the average velocity of the globular clusters
• D) cosmic background radiation

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Definitions:

Ordinal

A scale of measure that categorizes data while also ranking them in a meaningful order, but without indicating the exact differences between ranks.

Sign Test

A nonparametric statistical test used to determine if there are differences between two paired samples.

T-test

A statistical method used to determine if there is a significant difference between the means of two groups, which may be related in certain features.

Nonparametric Technique

Statistical methods that do not assume a particular distribution for the data, often used when data doesn't fit standard distributions.