econometrics hw

User Generated

XnyE

Economics

Description

logistic regression questions

i have uploaded the reading you will need to answer the questions

Unformatted Attachment Preview

Assignment – Logistic Regression –Due April 2, Monday. 1. Name:___________________________ Imagine two regression equations you are planning to run. In Case A: Y=test scores, X= student study habits, classified as good or bad, X2= class size, classified as "large" or "not large". In Case B: Y = accident or no accident, X1= # of years of driving experience and X2= driving habit, classified as "good driver" or "bad driver". In which case, if any, would a logistic regression be appropriate? (Put a dot in the correct choice as below. That is not the correct answer). You also need to read the handout given in class. Posted on Brightspace as well. Case A Case B Either Case A or B Neither Case A nor B 2. If a regular OLS procedure is run on an estimating equation which should be run as a logistic regression, which of the following might be a problem? The y-values cannot be measured properly The x-values cannot be measured properly The error term will not be applicable Predicted values from an OLS regression may fall outside the proper range 3. For a logistic regression, instead of OLS, the maximum likelihood method is used. The main difference between the OLS and the ML method is: OLS is computed in a single run while ML requires multiple iterations OLS gives p-values which are always higher than ML methods OLS gives p-values which are always lower than ML methods 2 2 OLS always has a lower explanatory power (R ) compared to the pseudo R in ML 4. In the 1986 shuttle case study, what would have been the predicted probability of failure if a logistic regression had been used using the temperature on the morning of launch? 60% 34% over 90% less than 10% 5. Re the shuttle case study -- Suppose for a particular temperature, the predicted probability of failure is 0.3736 and the actual y value is 0. The logit model in this case: predicts wrongly predicts correctly predicts only partly correctly more information is required to draw a conclusion 6. Suppose in a logit equation, yhat represents the predicted probability and y represents the actual outcome. Now consider a set of yhat's and y's. What is the proportion of correct predictions in this example? yhat y .702 0 .576 1 .045 1 .864 1 .245 0 .40 .60 1.00 .25 7. To run a logit regression, the "raw" y has to be converted into the "log of the odds ratio" form. Which of the following terms would be components in constructing the "log of the odds ratio" (1) lnY (2) log Y (3) Pr (Y) (4) 1- Pr (Y) (5) 1/Y (1), (2), (3) (2) and (4) Only (1) and (5) (3) and (4)
Purchase answer to see full attachment
User generated content is uploaded by users for the purposes of learning and should be used following Studypool's honor code & terms of service.

Explanation & Answer

Hello, kindly find the attached document.In case of any question feel free to ask.
Attached.

Logistic Regression outline paper
Question
1
2
3
4
5
6
7


Running Head: LOGISTIC REGRESSION

1

Logistic Regression
Name:
Institution:
Instructor:
Date:

LOGISTIC REGRESSION

2
Question 1

Imagine two regression equations you are planning to run. In Case A: Y=test scores, X= student
study habits, classified as good or bad, X2= class size, classified as "large" or "not large". In
Case B: Y = accident or no accident, X1= # of years of driving experience and X2= driving
habit, classified as "good driver" or "bad driver". In which case, if any, would a logistic
regression be appropriate?
Case A
Case B
Either Case A or B
Neither Case A nor B
Answer: Case B
Reason: Logistic regression is only appropriate if the dependent variable is dichotomous I.e.
(Binary). In case A: test score is not dichotomous but in case B accident is dichotomous. That is,
(occurred or did not occur):
Question 2
If a regular OLS procedure is run on an estimating equation which should be run as a logistic
regression, which of the following might be a probl...


Anonymous
I was having a hard time with this subject, and this was a great help.

Studypool
4.7
Trustpilot
4.5
Sitejabber
4.4

Similar Content

Related Tags