Generally Speaking,how Does the Surface Temperature and Luminosity of a Protostar

question 93

Multiple Choice

Generally speaking,how does the surface temperature and luminosity of a protostar compare to the surface temperature and luminosity of the main-sequence star it becomes?

• A)A main-sequence star is hotter and brighter than it was as a protostar.
• B)A main-sequence star is cooler and dimmer than it was as a protostar.
• C)A main-sequence star is cooler and brighter than it was as a protostar.
• D)A main-sequence star is hotter and dimmer than it was as a protostar.

---

Definitions:

Coefficient of Correlation

A rephrased definition of the correlation coefficient, highlighting its role in measuring the degree of correlation between two variables.

Sum of Squares

A statistical measure that quantifies the total deviation of each data point from the mean, squared and summed up.

Regression Analysis

A statistical technique for estimating the relationships among variables, often used to predict the value of a dependent variable based on the value of one or more independent variables.

Error Variable

An error variable represents the difference between observed and predicted values in a model, reflecting the amount of inaccuracy in predictions.