Market Research Analytics Test Questions Topic 5 & 6

The assumption of no autocorrelation in a Linear Regression Model is verified by…

c) Examining that the Durbin-Watson statistic is between 1,5 and 2,5

When we find that there is multicollinearity in a Linear Regression Model…

b) We should consider the elimination of one of the redundant variables if we want to analyse and interpret the coefficients

3. Regarding the determination coefficient of a Linear Regresssion Model:

b) The determination coefficient will always be larger or equal to the adjusted determination coefficient

4. The following table shows the results of a linear regression in which 'salary' of doctors (in hundreds of euros per year) is explained as a function of months of superior studies 'study' and the number of years working 'experience'. MARK THE FALSE ANSWER

b) The number of months of superior studies has a larger effect on salary than the experience.

5. In a double logarithmic regression model we obtain a coefficient o 0.05 for the independent variable. We can interpret that:

d) When the independent variable increases by 1% the dependent variable increases by 0.05%.

6. In the following semilogarithmic model to explain sales as a function of price: Y= e ( α + β X ) , the coefficient of the independent variable β can be interpreted as follows.

a) When X increases by 1 unit, Y increases by 100 β % .

1. If the logodds of (Y=1) of a particular binary (0,1) event are 2:

all answers are correct

2. In a multinomial logistic regression model where the dependent variable has more than 2 categories:

b) The logodds of the reference category ( L 0,0 ) are always 0.