In a business case study about inventory management, the _______ method is often used for categorizing inventory based on value and turnover.
- ABC
- FIFO
- HIFO
- LIFO
In a business case study about inventory management, the ABC method is often used for categorizing inventory based on its value and turnover. This helps prioritize items for efficient management and control.
What is the role of a 'Data Steward' in a complex data project?
- Data Stewards are responsible for ensuring data quality, governance, and compliance within a project.
- Data Stewards are responsible for project scheduling and resource allocation.
- Data Stewards manage hardware infrastructure in a data project.
- Data Stewards primarily focus on software development tasks in a data project.
Data Stewards play a crucial role in ensuring data quality, governance, and compliance within a complex data project. They are responsible for defining and implementing data policies, resolving data-related issues, and facilitating communication between business and technical teams.
What is the role of 'storytelling' in effective data visualization?
- It emphasizes creating visually appealing charts and graphs without the need for explanatory narratives.
- It encourages random arrangement of data points to create a sense of mystery and intrigue.
- It focuses on using fictional stories to illustrate data points, enhancing memorability.
- It involves presenting data in a narrative format, making it more engaging and understandable for the audience.
'Storytelling' in data visualization involves presenting data in a compelling narrative format. It helps engage the audience, convey insights effectively, and make data more memorable and relatable. Storytelling adds context and meaning to the data, enhancing its impact on decision-making.
What is the purpose of the GROUP BY statement in SQL?
- To arrange records in ascending order
- To filter records based on a condition
- To group records with similar values in one or more columns
- To join tables in a query
The GROUP BY statement in SQL is used to group records that have the same values in one or more columns. It is often used with aggregate functions (like COUNT, SUM, AVG) to perform calculations on each group of records. This is particularly useful for data analysis and summary reporting.
To connect and analyze data from different workbooks, the _______ feature in Excel is often utilized.
- Conditional Formatting
- Data Validation
- Index Match
- Power Query
The Power Query feature in Excel is commonly used to connect and analyze data from different workbooks. It enables users to import, transform, and combine data for comprehensive analysis.
What is the difference between HAVING and WHERE clause in SQL?
- HAVING is used for joining tables, and WHERE is used for filtering aggregates
- HAVING is used for row-wise filtering, and WHERE is used for aggregate-wise filtering
- WHERE is used for row-wise filtering, and HAVING is used for aggregate-wise filtering
- WHERE is used with aggregate functions, and HAVING is used with row-wise conditions
The WHERE clause is used for row-wise filtering, whereas the HAVING clause is used for aggregate-wise filtering. This means that the WHERE clause filters individual rows before they are grouped, while the HAVING clause filters grouped rows after they are formed.
In financial analysis, what KPI is used to assess a company's profitability relative to its revenue?
- Earnings Before Interest and Taxes (EBIT)
- Gross Profit Margin
- Return on Investment (ROI)
- Working Capital Ratio
Gross Profit Margin is a key performance indicator (KPI) used in financial analysis to assess a company's profitability relative to its revenue. It represents the percentage of revenue that exceeds the cost of goods sold. ROI, EBIT, and Working Capital Ratio are important metrics but are not specifically focused on profitability relative to revenue.
What is sharding in the context of database management?
- It is a method for compressing data in a database.
- It refers to creating a backup of a database.
- Sharding is a type of encryption technique for securing data.
- Sharding is the process of breaking down a large database into smaller, more manageable parts called shards.
Sharding involves partitioning a large database into smaller, more manageable parts called shards. Each shard can be hosted on a separate server, distributing the workload and improving scalability in large-scale database systems.
_______ computing is a cloud-based technology that allows for the efficient processing of complex algorithms on large datasets.
- Edge
- Fog
- Grid
- Quantum
Fog computing is a cloud-based technology that extends computing capabilities to the edge of the network. It allows for the efficient processing of complex algorithms on large datasets closer to the data source, reducing latency and bandwidth usage.
git _______' is used to undo changes by creating a new commit with the opposite changes.
- back
- reset
- revert
- undo
The correct command is 'git revert.' This command creates a new commit that undoes the changes made in a previous commit. 'git reset' is used for more aggressive changes, and 'git undo' and 'git back' are not valid Git commands.