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Gravitational Lensing: Summarize the observational evidence that a gravitational field can deflect the path of light. In figures such as 16.8 on page 451, how would you prove to a skeptic that the distorted images indicated by the arrows are indeed multiple images of a single gravitationally-lensed galaxy. Muster as much observational evidence as you can.
Scores
The numerical expressions of the results, achievements, or performance of individuals, often used in the context of exams, tests, or competitions.
Range
The difference between the highest and lowest values in a dataset, providing a measure of spread or dispersion.
Descriptive Data
Statistical calculations and summaries that describe the main features of a dataset, often through measures of central tendency and variability.
Variability
Refers to the extent to which data points in a dataset differ from each other and from the mean.
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