23) Validation data sets differ from training data sets in that validation data

ID: 3228015 • Letter: 2

Question

23) Validation data sets differ from training data sets in that validation data sets ________.

A) have known outcomes

B) test a model using the confusion matrix

C) are used to teach data-mining algorithms

D) provides more realistic test

24) In a k-Nearest Neighbors algorithm, similarity of records is based on the ________.

A) closeness of a record to numerical predictors in the other records

B) sum of the squares of the distance between the numerical predictors

C) set of linear functions of predictors called discriminant functions

D) nearness of a record to its own observations

1. Answer is B. The validation dataset is a test dataset which is used to test the results of the model

2.Answer is D

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