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Data Science Professional Practice Exam
Data Science Practice Test — No single standardized 'Data Science Practice Test' licensing exam exists; this is an original comprehensive practice exam modeled on the content domains, difficulty, and style of industry-recognized credentials including IBM Data Science Professional Certificate, Microsoft DP-100 (Azure Data Scientist Associate), and SAS Certified Data Scientist, covering statistics, machine learning, feature engineering, model evaluation, NLP, deep learning, and applied analytics at professional certification level.
54
Questions
90m
Time Limit
75.00%
To Pass
Question 1 of 54👑 VIP
A data scientist trains a logistic regression model on a dataset with 95% negative class and 5% positive class. The model achieves 95.2% accuracy. A junior colleague celebrates this result. What is the most critical flaw in this evaluation?
Questions 2–54 and full explanations are VIP-exclusive.