Spiral Galaxies with Quasarlike Nuclei Are Given the Name Seyfert

question 270

Multiple Choice

Spiral galaxies with quasarlike nuclei are given the name Seyfert galaxies.Similarly,giant elliptical galaxies with quasarlike nuclei are called:

• A) radio galaxies.
• B) peculiar galaxies.
• C) head-tail source galaxies.
• D) BL Lacertae objects.

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Definitions:

Qualitative Data

Data that is descriptive and conceptual, often categorized based on qualities and characteristics that are not numerical.

Chi-squared Test

An analytical test designed to evaluate whether there's a significant discrepancy between frequencies observed and those anticipated in various categories.

Contingency Table

A table used in statistics to display the frequency distribution of variables, showing the observed number of cases in each category.

Nominal Data

Data categorized without a natural order or ranking among the categories, such as gender or race.