In a study of 30 customers' utility bills in which the monthly bill was the dependent variable and the number of square feet in the house is the independent variable,the resulting regression model is = 23.40 + 0.4x.Given this,the sample correlation coefficient is known to be positive.

Question

In a study of 30 customers' utility bills in which the monthly bill was the dependent variable and the number of square feet in the house is the independent variable,the resulting regression model is  = 23.40 + 0.4x.Given this,the sample correlation coefficient is known to be positive.

Quizplus · Accepted Answer

Since the regression model has a positive slope coefficient, it implies a positive relationship between the dependent and independent variables. Therefore, the sample correlation coefficient should also be positive.

In a Study of 30 Customers' Utility Bills in Which