The least squares method requires that the variance 
of the error variable
is a constant no matter what the value of x is.When this requirement is violated, the condition is called:
Definitions:
Medal Winners
Individuals or teams that have received medals in recognition of achieving a high placement in competitions, often in sports.
Positive Emotions
Feelings that are generally good or pleasant to experience, such as happiness, joy, excitement, and love.
Olympics
An international multi-sport event divided into summer and winter games, where athletes from around the world compete in various sports.
Prototypical Emotion
Basic emotions that are universally recognized and experienced by all humans, such as happiness, sadness, fear, anger, and disgust.
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