
Data Preprocessing Quiz
Quiz
•
Computers
•
University
•
Practice Problem
•
Easy
NOR (PMJ)
Used 2+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary goal of data preprocessing?
To remove all data points
To enhance data quality for better analysis
To increase data redundancy
To randomly select features
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which technique is commonly used to handle missing data?
Deleting the entire dataset
Filling missing values with the mean or median
Ignoring the issue
Adding random values
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is feature selection in machine learning?
Removing all attributes from the dataset
Choosing relevant variables to improve model performance
Duplicating existing features
Adding random variables
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of data cleaning?
To introduce new errors
To standardize and correct inconsistencies in the data
To remove all categorical variables
To duplicate the dataset for backup
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is NOT a step in data preprocessing?
Data integration
Data redundancy
Data transformation
Data cleaning
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the main purpose of data integration?
Combining data from multiple sources into a unified format
Removing duplicate data
Randomly splitting data
Encrypting data for security
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is feature engineering?
The process of creating new meaningful features from raw data
The removal of all missing values
The deletion of unnecessary columns
The process of merging datasets
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