Question
What is a defining characteristic of big data compared
to traditional data?Solution
Big data is characterized by its "3 Vs": Volume, Velocity, and Variety. Due to its large size and complexity, traditional databases and analysis tools struggle to manage big data. Instead, big data processing requires frameworks like Hadoop or Spark, designed for distributed storage and parallel processing. The tools enable the management and analysis of massive datasets that may be unstructured or semi-structured, making big data highly valuable for complex analytics and real-time insights across industries. Option A is incorrect because big data is vast, not limited in size. Option B is incorrect as big data often includes unstructured formats, making traditional statistics insufficient. Option D is incorrect since big data usually comes from diverse sources, not manual entries alone. Option E is incorrect because big data generally requires more storage, even if compression is applied.
What does the following list comprehension produce?
result = [x**2 for x in range(5) if x % 2 == 0]
print(result)
In Python, which of the following functions in the Pandas library is used to merge two DataFrames df1 and df2 on a common column id?
Which of the following is the main characteristic that differentiates random sampling from non-random sampling techniques?
Which of the following is the best approach for presenting data-driven insights to a non-technical audience?
In healthcare, how can trend analysis most effectively enhance patient care?
Which of the following SQL commands is classified as a Data Definition Language (DDL) command?
Which sampling technique is most suitable when a population has distinct subgroups that should be represented proportionally?
Which of the following R functions is most appropriate for fitting a linear regression model?
In the context of metadata for data management, which of the following examples best illustrates descriptive metadata?
Which of the following cryptographic algorithms is an example of symmetric encryption and employs a block cipher with a key size of up to 256 bits?
