26.Which of the following best describes the data analytics skill of data scrubbing and data preparation?

Group of answer choices

comprehend the process needed to clean and prepare the data before analysis

demonstrate the ability to sort, rearrange, merge and reconfigure data in a manner that allows enhanced analysis

recognize what is meant by data quality, be it completeness, reliability or validity

perform basic analysis to understand the quality of the underlying data and its ability to address the business question

27.In general, the more complex the model, the greater the chance of _______.

Group of answer choices

Overfitting the data

The need to reduce the amount of data considered

Pruning the data

Underfitting the data

28.Which of the following best describes the purpose of a foreign key?

Group of answer choices

To create the relationship between two tables

To provide business information

To support business processes across the organization

To ensure that each row in the table is unique

29.When using [EmployeeID] as the unique identifier of the Employee table, [EmployeeID] is an example of which of the following?

Group of answer choices

Primary key

Composite key

Key attribute

Foreign key