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• Scatter plots are also known as scatter graphs and these graphs are similar to line graphs.

• A histogram is a way of organising data in graphical form which is most commonly used for continuous data.
• K-Nearest Neighbors algorithm is one of the key components of supervised learning technique and finds
intense application in pattern recognition, data mining and intrusion detection
• A KNN model uses KNN algorithm to calculate the distance between all the known points with the unknown
point and takes up the K number of points whose distance is minimum. After that, predictions are made on
the basis of these points.

S Solvedolved QQuestionsuestions

A. Tick () the correct answer.
1. What is Data Science primarily concerned with?

a. Baking
b. Interdisciplinary field combining statistics and machine learning

c. Painting
d. Astrophysics

2. What is the purpose of a Scatter Plot in data visualization?
a. Show relationships between two variables

b. Display a list of scattered items
c. Hide data points

d. Predict the future
3. In statistics, what does ‘median’ represent?
a. The most common value b. The middle value in a dataset

c. The highest value d. The lowest value
4. Which industry uses Data Science for Fraud Detection?

a. Entertainment b. Banking
c. Agriculture d. Sports
5. What does the ‘head()’ function in Pandas do?

a. Control thoughts b. Display top rows of a DataFrame
c. Act as a pillow d. Measure height

6. What is the primary function of a Price Comparison Website?
a. Sell products b. Compare prices, features, and reviews

c. Display random prices d. Share cooking recipes
7. Which Python library is fundamental for scientific computing and mathematical operations?

a. Scikit-learn b. TensorFlow
c. NumPy d. Keras

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