What is a dummy variable? If we use one on the right-hand side of the equation...

What is a dummy variable? If we use one on the right-hand side of the equation in a multivariate analysis, what are the implications for interpreting the constant? What is multicollinearity? How do we know if we have it in our models? How do we correct for it if we do? What is hetereskedasticity? Should we really be concerned about it? Why or why not?

Expert Solution

milcah answered 1 year ago

Look at the equation below. What is the acid on the left-hand side of the equation?...

Look at the equation below. What is the acid on the left-hand side of the equation? ?+NaOH --> NaCH3COO+H2O None of the other answers is correct. H2O CH3COOH Question 43 > What is the conjugate base in the equation shown below? CH3COOH+H2O ---> CH3COO- + H3O+ H3O+ None of the other answers is correct. CH3COO-

If the left side of the accounting equation increases, the right side of the equation must...

If the left side of the accounting equation increases, the right side of the equation must aslo increase. True or false? Explain in 100-150 words

a) Change the right-hand-side value of one of the constraints. Be sure that, the updated tableau...

a) Change the right-hand-side value of one of the constraints. Be sure that, the updated tableau is infeasible, and you are applying Dual Simplex Method. (Find a change that will make the new tableau infeasible.) b) Change the objective function coefficient of one of the decision variables. Be sure that, the updated tableau is non-optimal, and you are applying Simplex Method. (Find a change that will make the new tableau non-optimal.) c) Find the validity range for one of the...

How do we decide that variables to include on the right hand side? List 4 important

Your right-hand-side variable is likely correlated with some unobservable characteristics of the people in your sample...

Your right-hand-side variable is likely correlated with some unobservable characteristics of the people in your sample which are important for explaining your left-hand-side variable. You have two potential instruments that you believe might be correlated with your RHS variable but not with the unobservables. What test could you perform to determine if instrumental variables are necessary for consistent estimates? What is the intuition behind this test? What test could you use to check the assumption that your instruments are uncorrelated...

In this problem, you will create and use a dummy variable and the regression procedure to...

In this problem, you will create and use a dummy variable and the regression procedure to test the hypothesis of independence of two variables. The data in tab 17 (Waiting time) in DS6 represent the time spent waiting in the ER prior to being seen for two groups of patients. One group of patients had true emergencies; the second group had conditions requiring urgent medical attention. Using these data, do the following: 1. Rearrange the data so they can be...

Rearrange each of the following inequalities so that zero is on the right-hand side. a. p1<...

Rearrange each of the following inequalities so that zero is on the right-hand side. a. p1< p2 b. p1> p2 c. p1/= p2 for C. the line goes through the equals sign. Suppose the Acme Drug Company develops a new drug, designed to prevent colds. The company states that the drug is equally effective for men and women. To test this claim, they choose a random sample of 100 women and 100 men. At the end of the study, 38%...

b) Use a multiple regression model with dummy variables as follows to develop an equation to...

b) Use a multiple regression model with dummy variables as follows to develop an equation to account for seasonal effects in the data: Qtr1 = 1 if Quarter 1, 0 otherwise; Qtr2 = 1 if Quarter 2, 0 otherwise; Qtr3 = 1 if Quarter 3, 0 otherwise. If required, round your answers to three decimal places. For subtractive or negative numbers use a minus sign even if there is a + sign before the blank (Example: -300). If the constant...

1-what is the dummy variable and what is the purpose of included in regression model ?...

1-what is the dummy variable and what is the purpose of included in regression model ? 2- explaining the meaning of adjust r square? 3-if adjust r square computed. would it be higher , equal of lower than value of r square?

Explain in full how you will use a dummy variable regression to test for a structural...

Explain in full how you will use a dummy variable regression to test for a structural break. Also discuss the advantages of using a dummy variable regression over the Chow test when testing for structural break in data.

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