Prepare for the Business Analysis exam with our free practice test modules. Each quiz covers key topics to help you pass on your first try.
Try these questions from our free Business Analysis practice tests. The correct answer and an explanation follow each question.
In the LOGISTIC process, which of the following best defines a concordant pair of observations?
Answer: D. A prediction for an observation that includes the event is higher than for an observation that does not.
In logistic regression, a concordant pair consists of one observation where the event occurred and another where it did not. The pair is concordant if the model's predicted probability of the event for the observation where the event *did* occur is higher than the predicted probability for the observation where the event *did not* occur. This indicates that the model correctly distinguishes between event and non-event cases.
What disadvantage exists in cleaning up the data (imputation, transformations, etc.) on raw data before partitioning it for accurate assessment as opposed to cleaning up the data after partitioning it?
Answer: D. It is impossible to compare the efficacy of various washing techniques.
Cleaning data (imputation, transformations) on raw data *before* partitioning it for training, validation, and testing can lead to an overly optimistic assessment of model performance. A significant disadvantage is that it becomes impossible to accurately compare the efficacy of different data cleaning techniques. If the cleaning is done on the full dataset, the validation and test sets are no longer truly independent, making it difficult to assess how well a specific cleaning method generalizes to new, unseen data.
What kind of interaction between traceability requirements is not one?
Answer: D. Conform
Traceability requirements typically describe relationships like 'Satisfy' (a lower-level requirement fulfills a higher-level one), 'Depend' (one requirement relies on another), and 'Derive' (one requirement originates from another). 'Conform' is not a standard type of interaction used to describe the direct relationship or linkage between requirements in the context of traceability, which focuses on lineage and impact.
David works for the ACME Organization as a business analyst. As part of the requirements development process, David is now working on many work products. He may need to discuss the results of his job with the stakeholders. Which of the following is not a work product example?
Answer: C. Requirements documentation
The question asks for what is *not* a work product example in the context of discussing *results* with stakeholders. Interview questions and notes, presentation slides, and meeting agendas/minutes are all examples of artifacts created *during* the requirements development process or for *communicating* results. Requirements documentation, however, is the *output* or *result* of the requirements development process itself, not merely a work product used to discuss results.