Which of the following is a key difference between structured and unstructured data?
In SQL, which type of JOIN will return all rows from the left table and the matching rows from the right table, filling with NULLs where there is no match?
Which sampling technique is best suited for dividing a population into distinct subgroups and ensuring each subgroup is proportionally represented?
Which of the following statements correctly identifies the components of time series data ?
Which of the following best describes the primary purpose of a data warehouse in analytics?
A financial institution notices an unusual pattern in transactions where large amounts are transferred between new accounts shortly after opening. Which...
Which of the following statements best describes the primary difference between big data and traditional data?
A scatter plot reveals a strong positive linear relationship between two variables. Which of the following is the most appropriate statistical measure t...
A company’s network experiences intermittent connectivity issues. Upon analysis, the network technician observes frequent CRC (Cyclic Redundancy Check...
What is the primary purpose of data cleaning in the data analysis process?
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