ECO 391 Exam 2 questions and
answers graded A+
The simple linear regression model can be written in the form of y = Bo + B1x1 + B2x2 + E
T or F - ANS ✔✔FALSE
y = Bo + B1x1 + E
Which of the following statements is the least accurate concerning correlation analysis
A.) correlation does not imply causation
B.) the correlation coefficient captures only a linear relationship
C.) the correlation coefficient may not be a reliable measure when outliers are present in one or
both of these variable
D.) the correlation coefficient describes both the direction and strength of the relationship
between two variables only if the two variables have the same units of measurement - ANS
✔✔D.) the correlation coefficient describes both the direction and strength of the relationship
between two variables only if the two variables have the same units of measurement
in a simple linear regression model, if the plots on a scatter diagram lie on a straight line, which
of the following is the coefficient of determination, R^2?
answers graded A+
The simple linear regression model can be written in the form of y = Bo + B1x1 + B2x2 + E
T or F - ANS ✔✔FALSE
y = Bo + B1x1 + E
Which of the following statements is the least accurate concerning correlation analysis
A.) correlation does not imply causation
B.) the correlation coefficient captures only a linear relationship
C.) the correlation coefficient may not be a reliable measure when outliers are present in one or
both of these variable
D.) the correlation coefficient describes both the direction and strength of the relationship
between two variables only if the two variables have the same units of measurement - ANS
✔✔D.) the correlation coefficient describes both the direction and strength of the relationship
between two variables only if the two variables have the same units of measurement
in a simple linear regression model, if the plots on a scatter diagram lie on a straight line, which
of the following is the coefficient of determination, R^2?
