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Python Data Analysis

You're reading from   Python Data Analysis Perform data collection, data processing, wrangling, visualization, and model building using Python

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Product type Paperback
Published in Feb 2021
Publisher Packt
ISBN-13 9781789955248
Length 478 pages
Edition 3rd Edition
Languages
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Authors (2):
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Ivan Idris Ivan Idris
Author Profile Icon Ivan Idris
Ivan Idris
Avinash Navlani Avinash Navlani
Author Profile Icon Avinash Navlani
Avinash Navlani
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Table of Contents (20) Chapters Close

Preface 1. Section 1: Foundation for Data Analysis
2. Getting Started with Python Libraries FREE CHAPTER 3. NumPy and pandas 4. Statistics 5. Linear Algebra 6. Section 2: Exploratory Data Analysis and Data Cleaning
7. Data Visualization 8. Retrieving, Processing, and Storing Data 9. Cleaning Messy Data 10. Signal Processing and Time Series 11. Section 3: Deep Dive into Machine Learning
12. Supervised Learning - Regression Analysis 13. Supervised Learning - Classification Techniques 14. Unsupervised Learning - PCA and Clustering 15. Section 4: NLP, Image Analytics, and Parallel Computing
16. Analyzing Textual Data 17. Analyzing Image Data 18. Parallel Computing Using Dask 19. Other Books You May Enjoy

Generating random numbers

Random numbers offer a variety of applications such as Monte Carlo simulation, cryptography, initializing passwords, and stochastic processes. It is not easy to generate real random numbers, so in reality, most applications use pseudo-random numbers. Pseudo numbers are adequate for most purposes except for some rare cases. Random numbers can be generated from discrete and continuous data. The numpy.random() function will generate a random number matrix for the given input size of the matrix.

The core random number generator is based on the Mersenne Twister algorithm (refer to https://en.wikipedia.org/wiki/Mersenne_twister).

Let's see one example of generating random numbers, as follows:

# Import numpy
import numpy as np

# Create an array with random values
random_mat=np.random.random((3,3))
print("Random Matrix: \n",random_mat)

This results in the following output:

Random Matrix: [[0.90613234 0.83146869 0.90874706]
[0.59459996 0.46961249...
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