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WorksheetsData Science
Total questions: 25
Worksheet time: 11mins
What is Data Science mainly concerned with?
Data storage
Extracting insights from data
Data transmission
Hardware management
Which of the following is NOT a step in the Data Science lifecycle?
A. Data collection
B. Data cleaning
C. Data visualization
D. Data deletion
Structured data is usually stored in:
A. Images
B. Videos
C. Relational databases
D. Audio files
Which language is most commonly used in Data Science?
A. C
B. Python
C. HTML
D. PHP
Which library is used for numerical computation in Python?
A. Pandas
B. NumPy
C. Matplotlib
D. Seaborn
Mean, median, and mode are measures of:
A. Dispersion
B. Central tendency
C. Probability
A. Dispersion
What is an outlier?
A. Missing value
B. Duplicate value
C. Extreme data value
D. Average value
Correlation shows:
A. Causation
B. Relationship between variables
C. Data size
D. Accuracy
Which value of correlation indicates no relationship?
A. 1
B. -1
C. 0
D. 0.5
What is a feature in Data Science?
A. Output variable
B. Input variable
C. Model
D. Algorithm
What is the primary purpose of data cleaning in Data Science?
B. To remove inaccuracies and inconsistencies
A. To enhance data visualization
C. To store data securely
D. To increase data size
What does the term 'overfitting' refer to in machine learning?
C. A model that generalizes well
B. A model that is too simple
A. A model that performs well on training data but poorly on unseen data
D. A model that uses too few features
What is the purpose of a confusion matrix in machine learning?
D. To optimize model parameters
C. To calculate the mean of predictions
B. To store training data
A. To visualize the performance of a model
Which of the following is a common method for handling missing data?
A. Ignoring the missing values
D. Randomly generating new values
B. Filling with mean or median
C. Deleting the entire dataset
Which of the following is a common technique for data visualization?
D. Data mining
A. Scatter plots
B. Data normalization
C. Data encryption
Seaborn is used for
Data Visualization
Data Manipulation
Model Evaluation
Model Training
What is the function used to read a CSV file into a Pandas DataFrame?
load_csv()
read_csv()
import_csv()
read_file()
Which of the following is the primary data structure in NumPy?
DataFrame
Series
Array
List
How do you import the Matplotlib library in Python?
import matplotlib.pyplot as plt
import mpl
import matplot
import matplotlib
What is the purpose of the subplot() function in Matplotlib?
To adjust the size of the plot
To create multiple plots in the same figure
To set the limits of the plot
To add annotations to the plot
In classification tasks, what does the term "label" or "target" refer to?
The input data
The output variable
The model parameters
The evaluation metric
Which is the parent company for ChatGPT?
X (formerly Twitter)
Alphabet
OpenAI
Amazon
Which of the following of a random variable is a measure of spread?
Empirical mean
Standard deviation
Variance
All of the above
Which of the following are "Measures of Central Tendency"?
Range, Standard Deviation, Variance
Mean,Range, Mode
Mean, Standard Deviation, Range
Mode, Mean, Median
Data Science is
The science of creating data.
It is a branch of Social Studies.
Multidisciplinary study of data collections for analysis, prediction, learning and prevention.
It is a specialized field of study under Artificlal Intelligence
