The Brightest Stars in a Young Open Cluster Will Be

question 99

Multiple Choice

The brightest stars in a young open cluster will be:

• A)massive blue stars at the top left on the H-R diagram.
• B)red T Tauri stars still heading for the main sequence.
• C)red giants that are fusing helium into carbon.
• D)yellow giants like our Sun, but much larger.
• E)the core stars of planetary nebulae.

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Definitions:

Variance

A statistical measure that represents the dispersion or spread of data points in a data set, indicating how far each number in the set is from the mean.

Standard Deviation

A measure of the dispersion or variability in a set of data points, indicating how much the values deviate from the mean.

Risk Averse Investor

An investor who prefers to minimize risks, opting for safer investments with lower returns instead of higher risk ones with potentially higher returns.

Expected Return

The weighted average of all possible returns from an investment, with the weights being the probabilities of each outcome.