(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)