The Hipparcos Mission's Observations Have Given Us Good Data on Stars

question 5

Multiple Choice

The Hipparcos mission's observations have given us good data on stars out to about:

• A)100 light-years.
• B)200 light-years.
• C)200 parsecs.
• D)1000 light-years.
• E)1000 parsecs.

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Definitions:

Degrees Of Freedom

Degrees of freedom refer to the number of independent values or quantities which can be assigned to a statistical distribution, while still adhering to a given constraint.

Paired Populations

Refers to when two sets of data are directly linked or matched together, often used in studies involving before-and-after comparisons.

Sample Size

The number of observations or datapoints selected from a population to be included in a sample.

Significant Difference

A result in data indicating that the observed effect or difference is unlikely to have occurred due to chance or random variation.