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:

Neurological

Pertaining to the nervous system, including the brain, spinal cord, and nerves, involving the study and treatment of its structure, functions, and disorders.

Sensorimotor Stage

Piaget’s first stage of cognitive development, which lasts through infancy and is generally characterized by increasingly complex coordination of sensory experiences with motor activity.

Cognitive Development

The progression of learning and mental abilities, including thinking, problem-solving, and decision-making, from infancy through adulthood.

Standard Deviation

A statistical measure that quantifies the amount of variation or dispersion of a set of data values.