This query is used to remove specific records from an existing table:
A) Make Table query. B) Append query. C) Select query. D) Delete query.
D
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Indicate whether the statement is true or false.
Suppose two-thirds of the data belong to the positive class and the remaining one-third belong to the negative class. What is the expected error of a classifier that predicts every test record to be positive?
Consider the task of building a classifier from random data, where the at- tribute values are generated randomly irrespective of the class labels. Assume the data set contains records from two classes, “+” and “?.” Half of the data set is used for training while the remaining half is used for testing.