Which of the following is a technique used to handle missing data by filling in the missing values with estimated data?
A. Data Normalization
B. Data Imputation
C. Data Transformation
D. Data Encoding
What does the acronym "API" stand for in the context of data collection and retrieval?
A. Application Programming Interface
B. Advanced Protocol Interface
C. Automated Process Integration
D. Analytical Program Interaction
Which method of data collection involves systematically observing and recording data without interfering with the subjects?
A. Surveys
B. Interviews
C. Experiments
D. Observational Studies
What is the term for the process of reducing the size of a dataset while retaining its essential characteristics?
A. Data Wrangling
B. Data Reduction
C. Data Sampling
D. Data Cleaning
Which of the following is a common technique used to preprocess text data, involving the removal of common words?
A. Data Stemming
B. Data Tokenization
C. Data Parsing
D. Data Stopword Removal
What is the process of gathering data from various sources and storing it for analysis known as?
A. Data Wrangling
B. Data Collection
C. Data Visualization
D. Data Aggregation
Which of the following is NOT a common source of data for data collection in Data Science?
A. Social Media
B. Sensor Data
C. Print Media
D. Customer Surveys
In data collection, what is the term for the process of recording data in its original form without any changes?
A. Data Integration
B. Data Transformation
C. Data Aggregation
D. Raw Data Collection
Which of the following is a type of structured data that is organized in rows and columns, similar to a spreadsheet?
A. CSV
B. JSON
C. XML
D. Unstructured Text Data
What is the process of cleaning and formatting raw data into a usable format called?
A. Data Visualization
B. Data Integration
C. Data Cleaning
D. Data Extraction
