
Data Preprocessing and ML basics Quiz

Quiz
•
Mathematics
•
University
•
Hard
SARTHAK AGGARWAL
Used 1+ times
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15 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Which metric is more important when the cost of a false positive is very high?
Precision
Recall
F1 score
Accuracy
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Which type of machine learning is used for classifying emails as spam or not spam?
Semi-supervised learning
Supervised learning
Unsupervised learning
Reinforcement learning
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Which of the following is not a technique used in unsupervised learning?
K-means clustering
Principal Component Analysis (PCA)
Decision Trees
Hierarchical clustering
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Which type of machine learning algorithm is commonly used for anomaly detection?
Supervised learning
Unsupervised learning
Reinforcement learning
Semi-supervised learning
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
What is the range of values that the sigmoid function outputs?
-1 to 1
0 to 1
0 to infinity
Negative infinity to positive infinity
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
What is the objective of the cost function in linear regression?
To find the most complex model that fits the data
To reduce the dimensionality of the data
To maximize the number of correct predictions
To minimize the sum of squared differences between actual and predicted values
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
What does a boxplot display that helps in identifying outliers?
Mean and standard deviation
Median and interquartile range
Histogram of the data
Frequency distribution
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