Least-Squares Line

Describe the method of the least squares.

Which of the following statements is true?

• a.)
• The least-squares line is the process of minimizing the product of the squared residuals.
• b.)
• The least-squares line is the process of minimizing the quotient of the squared residuals.
• c.)
• The least-squares line is the process of minimizing the difference of the squared residuals.
• d.)
• The least-squares line is the process of minimizing the sum of the squared residuals.