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CIW Data Analyst Sample Questions:

1. What is the primary function of Tableau Public?

A) To capture and analyze data from social media platforms
B) To create interactive and visually appealing data visualizations
C) To perform statistical analysis on large datasets
D) To clean and transform messy data for analysis

2. Which software tool is known for its capabilities in data cleansing and transformation?

A) Tableau Public
B) OpenRefine
C) Rapid Miner
D) Google Fusion Tables

3. How does improving data quality directly benefit data analytics and business decisions?

A) It enhances the accuracy and reliability of data analysis results
B) It reduces the need for data visualization techniques
C) It ensures faster data analysis speed
D) It increases data storage capacity

4. What is the primary purpose of data modeling in database implementation?

A) To establish data security protocols
B) To define the structure and relationships of data entities
C) To improve data analysis speed
D) To optimize data storage capacity

5. Why is it important to backup a database regularly?

A) To restore data in case of system failures or data loss
B) To minimize data storage costs
C) To speed up data analysis processes
D) To prevent unauthorized access to the data

Solutions: