'Inventory Turnover' is a vital metric in supply chain management that measures how many times a company's inventory is sold and replaced over a specific period. A higher turnover ratio indicates efficient stock management.

Hadoop Distributed File System (HDFS) is specifically designed for distributed storage and processing of large datasets across clusters of computers, making it well-suited for Big Data applications.

Bubble Sort is often used for sorting smaller lists due to its simplicity and ease of understanding. However, it may not be the most efficient for larger datasets. Quick Sort, Merge Sort, and Binary Search are more suitable for larger datasets and offer better performance.

YARN is a crucial component in the Hadoop ecosystem that separates resource management from job scheduling, enabling more efficient cluster utilization by various applications. It stands for Yet Another Resource Negotiator.

Recursive Feature Elimination (RFE) is an advanced technique used for automated feature selection in large datasets. It recursively removes less important features based on their contribution to model performance.

The correct command is 'git log.' This command displays a detailed history of changes, including commit messages, authors, dates, and other relevant information. The 'git history' and 'git show' commands do not provide the same level of detailed information.

In the dplyr package, the filter function is used for filtering rows based on a specified condition. It allows you to subset the data based on logical conditions, making it a powerful tool for data manipulation.

Storing a person's phone number typically requires a text data type like String since phone numbers can include special characters like dashes and parentheses. Integer is used for whole numbers, Float for decimal numbers, and Boolean for true/false values.

Cassandra is a NoSQL database designed for horizontal scalability and distributed architecture. It is suitable for handling large amounts of data across multiple commodity servers. MongoDB, Redis, and Couchbase are also NoSQL databases but may have different design considerations.

In regression analysis, the correlation coefficient measures the strength and direction of a linear relationship between two variables. It ranges from -1 to 1, where 1 indicates a perfect positive linear relationship, -1 indicates a perfect negative linear relationship, and 0 indicates no linear relationship.