(Solved): WPC 300 Lab 7: Logistic • Due Oct 18 at 11:59pm • Points 20 • Questions 10...
WPC 300
Lab 7: Logistic
Due Oct 18 at 11:59pm
Points 20 Questions 10
Kept Score 20 out of 20
Instructions
• Start with datafile:
o titanicpassengers-bbm.jmp
• Change the file names to: YourFirstName_YourLastName_titanicpassengers.jmp
• Review what we did in the lab.
• You must use JMP to answer the following multiple-choice questions.
• Note: When you are asked to submit a screen capture, you need to make sure that your name is part of the capture.
Question 1 2 pts
Based on the available data sample, what percentage of the 3rd class passengers were on board that survived the accident?
- 62%
- 74.5%
- 25.5%
- 43%
Question 2 2 pts
What percentage of female on board did not survive the accident?
- 27.3%
- 72.3%
- 80.9%
- 19.1%
Question 3 2 pts
Develop a simple logistic regression model to test if ‘Age’ is a significant predictor of the outcome ‘survived’. Based on your analysis, which of the following statements is correct?
- Age is a significant predictor of the dependent variable ‘survived’
- As 'Age' decreases, the survival rate decreases.
- Age is not a significant predictor of the dependent variable ‘survived’
- As 'Age' increases, the survival rate also increases.
Question 4 2 pts
Share a screenshot to support your answer in Q3. Make sure you use different colors and different markers for passengers who survived and who didn’t.
Upload (attached in the answer file)
Question 5 2 pts
Develop a simple logistic regression model to test if ‘Fare’ is a significant predictor of the outcome ‘survived’. Based on your analysis, which of the following statements is correct?
- Fare is not correlated with the dependent variable ‘survived’ because the p-value is more than 0.05
- Fare is a significant predictor of the dependent variable ‘survived’ because the p-value is less than 0.05
- Fare is not correlated with ‘survived’ because one of them is a categorical variable
- As Fare increases, the survival rate decreases
Question 6 2 pts
Share a screenshot to support your answer in Q5. Make sure you use different colors and different markers for passengers who survived and who didn’t.
Upload (attached in the answer file)
Question 7 2 pts
As shown in the lab, develop a multiple logistic regression model (use stepwise regression) to predict survival. Which of the following variables is most significant in predicting survival?
- Age
- Port
- Passenger class
- Sex
Question 8 2 pts
As shown in the lab, develop a multiple logistic regression model (use stepwise regression) to predict survival. Which of the following variables is not significant to predict survival?
- Parents and children
- Passenger class
- Port
- Age
Question 9 2 pts
Provide a screenshot of appropriate table to support your answer in Q7 & Q8
Upload (attached in the answer file)
Question 10 2 pts
Provide the screenshot of the equation of the final model (the resulting logit of the probability model, saved as Lin[Yes] in the data table).
Upload (attached in the answer file)
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