Question
In regression analysis, which metric measures the
proportion of variance explained by the model?Solution
R-squared indicates how well the independent variables explain the variability in the dependent variable.
In a data warehouse, a fact table typically contains:
Which type of schema uses a central fact table connected to dimension tables?
Which analytics type is focused on predicting future outcomes?
Metadata in data warehousing refers to:
What is a 'star schema' in data warehouse design?
Which of the following best describes a fact constellation schema in a data warehouse?
Which OLAP operation involves focusing on a subset of dimensions (e.g., region=‘Asia’)?
In a data warehouse, which type of table stores quantitative data for analysis?
A snowflake schema is different from a star schema because:
Which clause is used to sort the results in SQL?
