Quasar's Spectral Lines Are

question 58

Multiple Choice

Quasar's spectral lines are:

• A) emission lines with large redshifts.
• B) a continuum from the synchrotron radiation.
• C) fuzzy absorption lines from the merged light of the billions of stars.
• D) too complex for any interpretation.
• E) nonexistent, the gas so hot as to be totally ionized, so no lines are seen.

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Definitions:

Total Variation

The overall measure of variability within a dataset, including both the explained and unexplained variance.

Coefficient of Determination

A measure in statistics that shows the proportion of the variance in the dependent variable that is predictable from the independent variable(s).

SSE

Sum of Squared Errors; a measure of the discrepancy between the data and an estimation model.

Regression Coefficients

Quantitative measures that assess the relationship between the dependent variable and each independent variable in regression analysis.