Book Image

Hands-On Machine Learning with Microsoft Excel 2019

By : Julio Cesar Rodriguez Martino
Book Image

Hands-On Machine Learning with Microsoft Excel 2019

By: Julio Cesar Rodriguez Martino

Overview of this book

We have made huge progress in teaching computers to perform difficult tasks, especially those that are repetitive and time-consuming for humans. Excel users, of all levels, can feel left behind by this innovation wave. The truth is that a large amount of the work needed to develop and use a machine learning model can be done in Excel. The book starts by giving a general introduction to machine learning, making every concept clear and understandable. Then, it shows every step of a machine learning project, from data collection, reading from different data sources, developing models, and visualizing the results using Excel features and offerings. In every chapter, there are several examples and hands-on exercises that will show the reader how to combine Excel functions, add-ins, and connections to databases and to cloud services to reach the desired goal: building a full data analysis flow. Different machine learning models are shown, tailored to the type of data to be analyzed. At the end of the book, the reader is presented with some advanced use cases using Automated Machine Learning, and artificial neural network, which simplifies the analysis task and represents the future of machine learning.
Table of Contents (17 chapters)
Free Chapter
1
Section 1: Machine Learning Basics
4
Section 2: Data Collection and Preparation
8
Section 3: Analytics and Machine Learning Models
11
Section 4: Data Visualization and Advanced Machine Learning

Studying the Spearman's correlation

To calculate the Spearman's coefficient, we need to first rank the values of each variable, that is, the order of the values when we sort them from highest to lowest. Once we have the new table, we will calculate Pearson's ρ on it.

In a new sheet, we define the following formula in a cell:

=RANK.AVG(Data!A2;auto_mpg[mpg])

Here, we are asking Excel to write in that cell the ranking corresponding to the first cell of the mpg column in our data table, taking into account the full range of the column. We copy the formula to the cells on the right until we complete the number of columns of the data table (8 columns). It doesn't matter if you copy the formula to an extra cell – you will just get an error message since you are out of the data table range. In a similar way, we can copy the formulas to the remaining...