Compared with What We See Today, Galaxies in the Past

question 23

Multiple Choice

Compared with what we see today, galaxies in the past were

• A) more ordered and more likely to have spiral structure.
• B) more ordered and less likely to have spiral structure.
• C) messier and more likely to have spiral structure.
• D) messier and less likely to have spiral structure.
• E) exactly the same as they are today.

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Definitions:

Population Proportion

The fraction or percentage of a population that exhibits a particular attribute or characteristic.

Confidence Interval

A stretch of numerical indicators, obtained from sample statistics, envisaged to hold the secret value of a population characteristic.

Margin of Error

An expression of the amount of random sampling error in a survey's results, indicating a confidence interval within which the true value lies.

σ

Symbol representing the standard deviation of a population in statistics.