Which of the Following Statements About the Main Sequence Stage

question 4

Multiple Choice

Which of the following statements about the main sequence stage in the life of a star is FALSE?

• A) all stars spend the majority of their lives in the main sequence stage
• B) during the main sequence stage, energy to power the star is provided by the fusion of hydrogen
• C) main sequence stars are rare in the Galaxy, so we are lucky to be living around one
• D) different stars spend a different amounts of time (number of years) in the main sequence stage, depending on the characteristics they were born with
• E) during the main sequence stage, the mass of any star does not change significantly

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Definitions:

Deviations

Differences between observed values and the average of those values in a dataset.

Mean

The arithmetic average of a set of numbers, calculated by adding all the numbers together and dividing by the quantity of numbers.

Individual Data Elements

Single pieces of information or data that are collected and analyzed in a research study.

Sample Variance

A measure of the dispersion or variability in a sample data set, calculated as the average squared deviation of each number from the mean of the data set.