Regression Line

What is the name of the method to find the regression line for y on x?

• Best fit line

• By eyes

• Method of least squares

• All of the above

What does 'a' represent in the equation on the left?

• The dependent variable

• The independent variable

• The slope of the best fit

• The intercept of the best fit line

What does 'b' represent in the equation shown on the left?

• The dependent variable

• The independent variable

• The slope of a best fit line

• The intercept of a best fit line

What is the ∑xy of the given data table?

• 212

• 252

• 262

• 272

What is the

∑(x^2) of the given data table?

• 140

• 141

• 161

• 184