FDSA MCQ

What is data?

• A collection of facts, figures, and statistics
  

• A type of computer software
  

• A mathematical formula
  

• A programming language

In computing, what is the smallest unit of data?

• Byte
  

• Bit
  

• Kilobyte
  

• Megabyte

Which type of data is collected directly from the source?

• Secondary data
  

• Primary data
  

• Processed data
  

• Synthetic data

What is the primary characteristic of "Big Data"?

• a) Small datasets with structured information
  

• b) Large volumes of data with high velocity and variety
  

• c) Data stored in relational databases only
  

• d) Only structured data with low processing speed

Which of the following is NOT a type of data in data science?

• Structured data
  

• Unstructured data
  

• Semi-structured data
  

• Irrelevant data

What does "ETL" stand for in data processing?

• Extract, Transfer, Load
  

• Evaluate, Train, Learn
  

• Extract, Transform, Load
  

• Edit, Test, Launch

What is an example of a data visualization technique used in Descriptive Analytics?

• Scatter plots and bar charts
  

• Genetic algorithms
  

• Decision trees for classification
  

• Predictive regression models

What does correlation measure in statistics?

• The cause-and-effect relationship between two variables
  

• The strength and direction of a linear relationship between two variables
  

• The probability of an event occurring
  

• The distribution of a single variable

If two variables have a correlation coefficient (r) of -0.9, what does this indicate?

• A strong positive correlation
  

• A weak positive correlation
  

• A strong negative correlation
  

• No correlation

. Which of the following is NOT a data format?

• CSV
  

• JSON
  

• HTTP
  

• XML