19) You run cross validation using the Caret package and get the following output. model log$results parameter Accuracy Kappa AccuracySD KappaSD none 0.8924764 0.7848746 0.047502320.09498272 Which of the following is true? A) 89.2% of the variation in your data is accounted for by the model B) The p-value of the method is 0.0047, so cross validation is significant at the a=0.05 level. C) Accounting for random error, cross-validation achieved a classification success of 0.7849 (78.49 %). D) Cross-validation achieved a classification success of 0.7849 (78.49 %). Answer: C 21) You have a dataset with eight values 3.2, 4.5, 6.0, 7.1, 7.2, 7.8, 8.5, 9.9. You sample sets of five values from this dataset. Which of these could possibly be sampled with replacement? A) 4.5, 6.0, 7.1, 7.1, 8.5 B) 3.2, 4.5, 6.0, 7.8, 8.5 C) 3.2, 7.1, 7.2, 8.5, 9.9 D) 6.0, 7.1, 7.2, 8.5, 9.9 Answer: A

19) You run cross validation using the Caret package and get the following output. model log$results parameter Accuracy Kappa AccuracySD KappaSD none 0.8924764 0.7848746 0.047502320.09498272 Which of the following is true? A) 89.2% of the variation in your data is accounted for by the model B) The p-value of the method is 0.0047, so cross validation is significant at the a=0.05 level. C) Accounting for random error, cross-validation achieved a classification success of 0.7849 (78.49 %). D) Cross-validation achieved a classification success of 0.7849 (78.49 %). Answer: C 21) You have a dataset with eight values 3.2, 4.5, 6.0, 7.1, 7.2, 7.8, 8.5, 9.9. You sample sets of five values from this dataset. Which of these could possibly be sampled with replacement? A) 4.5, 6.0, 7.1, 7.1, 8.5 B) 3.2, 4.5, 6.0, 7.8, 8.5 C) 3.2, 7.1, 7.2, 8.5, 9.9 D) 6.0, 7.1, 7.2, 8.5, 9.9 Answer: A

Functions and Change: A Modeling Approach to College Algebra (MindTap Course List)

6th Edition

ISBN:9781337111348

Author:Bruce Crauder, Benny Evans, Alan Noell

Publisher:Bruce Crauder, Benny Evans, Alan Noell

Chapter5: A Survey Of Other Common Functions

Section5.3: Modeling Data With Power Functions

Problem 3TU

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