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# (Solved): WPC 300 : Lab 7: Logistic 2021 UPDATES...

• Lab 7: Logistic
• Started: Feb
• Quiz Instructions
• 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?

• 74.5%
• 25.5%
• 43%
• 62%

Question 2        2 pts

What percentage of male on board did not survive the accident?

• 72.3%
• 19.1%
• 27.3%
• 80.9%

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?

• As 'Age' increases, the survival rate also increases.
• Age is not a significant predictor of the dependent variable ‘survived’
• Age is a significant predictor of the dependent variable ‘survived’
• As 'Age' decreases, the survival rate decreases.

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.

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 not correlated with ‘survived’ because one of them is a categorical variable
• As Fare increases, the survival rate decreases
• Fare is a significant predictor of the dependent variable ‘survived’ because the p-value is less than 0.05

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.

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
• Sex
• Passenger class

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
• Age
• Port
• Passenger class

Question 9        2 pts

Provide a screenshot of appropriate table to support your answer in Q7 & Q8

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).

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