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IBM Watson Data Scientist v1 Sample Questions:

1. In the context of assessing data quality in Watson Knowledge Catalog (WKC) and Cloud Pak for Data (CPD), what is a primary focus?

A) Increasing the volume of data collected
B) Analyzing completeness, consistency, and accuracy of data
C) Enhancing the graphical user interface
D) Focusing on the data's color scheme

2. Which method is used for merging records in SPSS Modeler Merge node that allows specifying a requirement to be satisfied in order for the merge to take place?

A) Key
B) Filter
C) Condition
D) Order

3. In classification models, which of the following metrics is NOT directly derived from the confusion matrix?

A) Recall
B) Mean Absolute Error (MAE)
C) Precision
D) F1-score

4. Which of the following is a critical first step in understanding a business problem for data science projects?

A) Choosing the visualization tools
B) Defining the project scope
C) Deploying the model
D) Selecting the machine learning algorithm

5. In the case of imbalanced data, what technique is recommended to ensure that the train and test sets have similar distributions of the target variable?

A) Using only the majority class for splitting
B) Random split without considering the target variable
C) Splitting based on the order of data collection
D) Stratified split

Solutions: