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The simple linear regression model is y =Bo+ B1x What does B1 represent? It is the value of the explanatory variable for the ith observation in the population. It is the y-intercept of the population regression line. It is the slope of the population regression line. It is the residual of the ith observation in the population. It is the observed value of the response variable for the ith observation in the population. StV | Jump to