Data Science Methodology Reading Help

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1. Which statement best describes the Modeling Stage of the data science methodology?

A. Modeling may require testing multiple algorithms and parameters B. Modeling always uses training and test sets C. Modeling is always based on predictive models D. The Modeling stage is followed by the Analytic Approach Stage

2. Select the correct statement(s) about the Model Evaluation stage of the data science methodology.

A. Model Evaluation includes ensuring the model is designed as intended. B. Model Evaluation includes ensuring that the model is working as intended. C. Model Evaluation includes ensuring that the data are properly handled and interpreted.

3. A data scientist, John, was asked to help reduce readmission rates at a local hospital. After some time, John provided a model that predicted which patients were more likely to be readmitted to the hospital and declared that his work was done. Which of the following best describes this scenario?

A. They would use descriptive statistics and data visualization techniques. B. Johns mistake is that he lied in the Analytic Approach step of the data science methodology. C. They use deep learning. D. John still needed to collect more data. E. John only provided one model as a solution and he should have provided multiple models. F. Even though John only submitted one solution, it might be a good one. However, John needed feedback on his model from the hospital to confirm that his model was able to address the problem appropriately and sufficiently. G. They begin with regression, classification, or clustering.