21.Which of the following best describes the link prediction approach to data analytics?

Group of answer choices

An attempt to predict a relationship between two data items.

An attempt to characterize the typical behavior of an individual, group or population by generating summary statistics about the data.

An attempt to reduce the amount of information that needs to be considered to focus on the most critical items.

An attempt to discover associations between individuals based on transactions involving them.

22.Which of the following best describes the data analytics skill of data quality?

Group of answer choices

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

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

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

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

23.All of the following are included in the five steps of the ETL process except:

Group of answer choices

Scrub the data

Obtain the data

Determine the purpose and scope of the data request

Validate the data for completeness and integrity

24.Letter grades of A, B, and C would be best described as an example of:

Group of answer choices

Ordinal data

Ratio data

Nominal data

Interval data

25._______ is more complex than _______.

Group of answer choices

Quantitative data; qualitative data

Qualitative data; quantitative data

Test data; training data

Training data; test data