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Data Preprocessing Quiz

Authored by Rajakumar R

Engineering

University

Used 1+ times

Data Preprocessing Quiz
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20 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main goal of data preprocessing?

Create new machine learning models

Visualize data

Prepare raw data for analysis

Increase data storage

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is not a typical data preprocessing step?

Handling missing values

Model tuning

Encoding categorical variables

Data normalization

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why is Exploratory Data Analysis (EDA) important?

It helps select the best algorithm

It trains the model

It helps understand data patterns and distributions

It predicts future trends

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is an outlier?

A value that falls within the normal range

A duplicated data entry

A missing value

A value that differs significantly from other observations

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is a technique used during EDA?

Grid search

Data encryption

Box plot

Recursive feature elimination

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of normalization?

To make data more secure

To reduce data size

To scale features to a similar range

To convert text to numbers

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following methods is used for normalizing data?

One-hot encoding

Min-max scaling

Label encoding

PCA

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