Business, 20.09.2021 20:00 caplode7497
Use the “CarsARM2.csv” data set to answer the following questions. Load the data set in Weka and
construct a decision tree (J48) with the default parameters and the “Use training set” test option.
a. What is the overall prediction accuracy for this decision tree model?
b. What are the numbers of correctly and incorrectly classified instances?
c. What is the size of the tree and the number of leaves?
d. Modify the parameters to have minNumObj=25. What is the new accuracy? Comment on the
accuracy change as compared to the previous scenario.
e. What are the new numbers of correctly and incorrectly classified instances?
f. Interpret the confusion matrix.
g. Identify those attributes (if any) that do not affect a car model’s acceptable rating according
to this decision tree.
h. Estimate the acceptable rating for the following car models based on this decision tree:
Buy Maint Doors People Lugg Safety Accept
High Vhigh 2 2 Big High ?
Med Med 4 More Med High ?
Vhigh Low 5more 4 Big Low ?
Answers: 3
Business, 21.06.2019 13:30
Marine corps leaders use coaching to scrutinize their subordinates to identify proficiency and conduct marking ranges.
Answers: 1
Business, 22.06.2019 16:40
Job applications give employers uniform information for all employees,making it easier to
Answers: 1
Business, 22.06.2019 17:00
You hold a diversified $100,000 portfolio consisting of 20 stocks with $5,000 invested in each. the portfolio's beta is 1.12. you plan to sell a stock with b = 0.90 and use the proceeds to buy a new stock with b = 1.50. what will the portfolio's new beta be? do not round your intermediate calculations.
Answers: 2
Business, 22.06.2019 18:00
Your subscription to investing wisely weekly is about to expire. you plan to subscribe to the magazine for the rest of your life, and you can renew it by paying $85 annually, beginning immediately, or you can get a lifetime subscription for $620, also payable immediately. assuming that you can earn 6.0% on your funds and that the annual renewal rate will remain constant, how many years must you live to make the lifetime subscription the better buy?
Answers: 2
Use the “CarsARM2.csv” data set to answer the following questions. Load the data set in Weka and
c...
Mathematics, 05.06.2020 23:03
History, 05.06.2020 23:03
Mathematics, 05.06.2020 23:03
Mathematics, 05.06.2020 23:03
Mathematics, 05.06.2020 23:03
Biology, 05.06.2020 23:03
Mathematics, 05.06.2020 23:03