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Two elliptical galaxies have identical radii and luminosities,but stars in galaxy A have a maximum orbital speed three times that of galaxy B.How much more massive is galaxy A than galaxy B?
Reliability
The extent to which an assessment tool or measurement procedure yields consistent and stable results over time.
Validity
The extent to which a concept, conclusion, or measurement is well-founded and likely corresponds accurately to the real world.
Positive Symptoms
In the context of psychiatric conditions, refers to symptoms that add abnormal experiences, such as hallucinations or delusions, particularly in schizophrenia.
Negative Symptoms
In psychiatry, symptoms characterized by the absence or diminution of normal behaviors or emotions, commonly associated with schizophrenia.
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