how to find the estimated simple linear regression equation

Subgroups of X have certain distributions around their means, e.g., normal distribution. Why do we try to express the scattered data points as a straight line? The main idea is that the line represents means of Y for subgroups of X, not individual data points ( Figure 1B). Based on the normal probability plot, are the error terms normally distributed? Circle the appropriate response.(A) Description of relationship of 2 variables, X and Y (B) A conceptual relationship between the regression line and surrounding subgroups in the regression model. LINEARITY INDEPENDENCE NORMALITY EQUAL VARIANCES NO VIOLATIONS d Based on the residual plot, is this model appropriate? Circle the appropriate response.

independence, normal distribution of errors, and equal variance among error terms) is violated in this regression? Circle one response. which of the underlying regression assumptions (Linearly. Write the estimated simple linear regression equation here (rounding to thousandths) c. Based on the normal probability plot, are the error terms normally distributed? Circle the appropriate response. Based on the residual plot, is this model appropriate? Circle the appropriate response. LINEARITY INDEPENDENCE NORMALITY EQUAL VARIANCES NO VIOLATIONS d.

Based on the residual plot, which of the underlying regression assumptions (linearity, independence, normal distribution of errors, and equal variance among error terms) is violated in this regression? Circle one response. Include residual analysis and the probability plot. Use Excel to find the estimated simple regression equation that relates the dependent variable y (MPG) to the independent variable x (Weight) for a sample of 12 cars.

How to find the estimated simple linear regression equation