1. Which attribute should an analyst ensure a data set has regardless of the source?
A. Reporting accuracy Correct
B. Historical context
C. Publishing potential
D. Sampling bias
Explanation
Reporting accuracy ensures the data is reliable and trustworthy, a critical attribute for any data set. Historical context is not always necessary for all data sets. Publishing potential is not a data attribute but rather a potential use. Sampling bias is a flaw to avoid, not an attribute to ensure.
2. Which data structure helps to keep data consistent and provides a map of how data is organized?
A. Sampling data structure
B. Historical data structure models
C. Documented data models Correct
D. Raw data structures
Explanation
Documented data models define the structure and relationships of data, ensuring consistency and providing a clear organizational map. Sampling data structure is not a standard term. Historical data structure models are not typically used for this purpose. Raw data structures lack defined organization.
3. Which type of unstructured data does an analyst use?
A. Ranking of favorite retailers
B. Social media posts Correct
C. Minutes spent making decisions
D. Number of store visits made
Explanation
Social media posts are unstructured data, lacking a predefined format, making them suitable for flexible analysis. Rankings are structured due to their ordered format. Minutes spent is numerical and structured. Store visits are also structured numerical data.
4. Which type of internal data does an analyst use?
A. Sales calculated at in-store registers Correct
B. Industry indices of purchasing power
C. Regional sales collected by another retailer
D. Open-access resources
Explanation
Sales at in-store registers are internal data generated within the organization. Industry indices are external, as they come from outside sources. Another retailer’s sales are external data. Open-access resources are external, not company-generated.
5. Which type of external data does an analyst at a retailer use?
A. Open-access resources Correct
B. Number of store visits
C. Open hours of peak sales
D. Store inventory
Explanation
Open-access resources are external data available outside the retailer, useful for market analysis. Store visits, open hours, and store inventory are internal data generated by the retailer’s operations.