A Data Scientist Is Developing a Binary Classifier to Predict

question 37

Multiple Choice

A Data Scientist is developing a binary classifier to predict whether a patient has a particular disease on a series of test results. The Data Scientist has data on 400 patients randomly selected from the population. The disease is seen in 3% of the population. Which cross-validation strategy should the Data Scientist adopt?

• A) A k-fold cross-validation strategy with k=5
• B) A stratified k-fold cross-validation strategy with k=5
• C) A k-fold cross-validation strategy with k=5 and 3 repeats
• D) An 80/20 stratified split between training and validation

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Definitions:

Nonverbal Communication

The transmission of messages or signals through a non-linguistic means, such as body language, facial expressions, and gestures.

Facial Expressions

The movements or positions of the face that convey emotional states or reactions to situations.

Authority

The authority or ability to issue commands, make judgments, and ensure compliance.

Courteous Phone Behavior

The practice of demonstrating politeness, respect, and consideration for others during phone conversations.