Which Parameter Is Plotted as a Function of Distance from the Galactic

question 70

Multiple Choice

Which parameter is plotted as a function of distance from the galactic center in a rotation curve of a galaxy?

• A) mass of matter inside the distance from the galactic center
• B) thickness of the galactic disk
• C) mass of cool hydrogen gas
• D) speed of stars orbiting the galactic center

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Definitions:

T Procedures

Statistical methods that involve the use of the t-distribution, commonly used for hypothesis testing or estimating the mean of a population when the sample size is small and the population standard deviation is unknown.

Sample Size

The number of observations or items selected from a population to form a sample for the purpose of statistical analysis.

Standard Errors

The standard deviation of the sampling distribution of a statistic, often used to measure the precision of sample estimates.

Face-to-face

Direct interaction between individuals in the same physical space, typically involving conversation or visual contact.