Data Analytics with Python Week 12 Assignment 12 Solution | NPTEL | Swayam | Jan-Jul 2024

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Data Analytics with Python All Weeks Assignment Solution

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Excel Tricks

Which clustering algorithm works well when the shape of the clusters is hyper-spherical?
K means
Agglomerative Hierarchical clustering
Divisive Hierarchical clustering
All of the above

In decision tree, an internal node represents –
A test on an attribute
An outcome of the test
Entire sample population
Holds a class label

Choose the correct statement about the CART model
CART is an unsupersived learning technique
CART is a supervised learning technique
CART adopts a greedy approach
Both b. and c.

Which library is used to built the decision tree model-
Decision tree classifier
DecisionTreeClassifier
Decision_Tree_Classifier
Decision_tree_model

State True or False: Gini Index enforces the resulting tree to have multiway splits
True
False

Chance nodes are represented by ___________
Disks
Squares
Circles
Triangles

_______is the measure of uncertainty of a random variable, it characterizes the impurity of an arbitrary collection of examples.
Information Gain
Gini Index
Entropy
None of the above

End Nodes are represented by __________
Disks
Squares
Circles
Triangles

Decision tree learners may create biased trees if some classes dominate. What’s the solution of it?
Balance the dataset prior to fitting
Imbalance the dataset prior to fitting
Balance the dataset after fitting
None of the above

Suppose, your target variable is the price of a house using Decision Tree. What type of tree do you need to predict the target variable?
Classification tree
Regression Tree
Clustering tree
Dimensionality reduction tree

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