Question - 1
Data science is the process of a diverse sets of data through?
organizing data
processing data
analysing data
All of the above
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Solutions
Answer- D
Question - 2
Data science is the process of diverse sets of data through?
organizing data
processing data
analysing data
All of the above
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Solutions
Answer- D
Question - 3
The modern conception of data science as an independent discipline is sometimes attributed to?
William S.
John McCarthy
Arthur Samuel
Satoshi Nakamoto
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Solutions
Answer- A
Question - 4
Which of the following language is used in Data Science?
Answer- C
Question - 5
Which of the following is false?
Subsetting can be used to select and exclude variables and observations
Raw data should be processed only one time.
Merging concerns combining datasets on the same observations to produce a result with more variables
None Of the above
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Solutions
Answer- B
Question - 6
Which of the following are correct skills for a Data Scientist?
Probability & Statistics
Machine Learning / Deep Learning
Data Wrangling
All of the above
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Solutions
Answer- D
Question - 7
Which of the following is not a part of the data science process?
Discovery
Model Planning
Communication Building
Operationalize
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Solutions
Answer- C
Question - 8
Which of the following is not an application for data science?
Recommendation Systems
Image & Speech Recognition
Online Price Comparison
Privacy Checker
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Solutions
Answer- D
Question - 9
A ________ is a structured representation of data.
database table
functions
data preparation
data frame
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Solutions
Answer- D
Question - 10
We write ______ in front of mean to let Python know that we want to activate the mean function from the Numpy library.
Answer- B
Question - 11
Point out the correct statement.
Raw data is original source of data
Preprocessed data is original source of data
Raw data is the data obtained after processing steps
None of these
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Solutions
Answer- A
Question - 12
Which of the following is the common goal of statistical modeling?
Inference
Summarizing
Subsetting
None of the above
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Solutions
Answer- A
Question - 13
Which of the following is a revision control system?
Answer- A
Question - 14
Which of the following focuses on the discovery of (previously) unknown properties on the data?
Data mining
Big data
Data wrangling
Machine learning
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Solutions
Answer- A
Question - 15
How do we perform Bayesian classification when some features are missing?
We assuming the missing values as the mean of all values.
We ignore the missing features.
We integrate the posteriors probabilities over the missing features.
Drop the features completely.
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Solutions
Answer- C
Question - 16
Which of the following statement is False in the case of the KNN Algorithm?
For a very large value of K, points from other classes may be included in the neighborhood.
For the very small value of K, the algorithm is very sensitive to noise.
KNN is used only for classification problem statements.
KNN is a lazy learner.
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Solutions
Answer- C
Question - 17
The robotic arm will be able to paint every corner in the automotive parts while minimizing the quantity of paint wasted in the process. Which learning technique is used in this problem?
Supervised Learning.
Unsupervised Learning.
Reinforcement Learning.
None of these
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Solutions
Answer- C
Question - 18
How do you choose the right node while constructing a decision tree?
An attribute having high entropy
An attribute having high entropy and information gain
An attribute having the lowest information gain.
An attribute having the highest information gain.
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Solutions
Answer- D
Question - 19
What kind of distance metric(s) are suitable for categorical variables to find the closest neighbors?
Euclidean distance.
Manhattan distance.
Minkowski distance.
Hamming distance.
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Solutions
Answer- D
Question - 20
In the Naive Bayes algorithm, suppose that prior for class w1 is greater than class w2, would the decision boundary shift towards the region R1(region for deciding w1) or towards region R2(region for deciding w2)?
towards region R1.
towards region R2.
No shift in decision boundary.
It depends on the exact value of priors.
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Solutions
Answer- B
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