Excel Data Analysis: Modeling and Simulation Second Edition by Hector Guerrero pdf.
When spreadsheets first became widely available in the early 1980s, it spawned a revolution in teaching. What previously could only be done with arcane software and large-scale computing was now available to the common man, on a desktop. Also, before spreadsheets, most substantial analytical work was done outside the classroom where the tools were; spreadsheets and personal computers moved the work into the classroom. Not only did it change how the data analysis curriculum was taught, but it also empowered students to venture out on their own to explore new ways to use the tools. I can’t tell you how many phone calls, office visits, and/or emails I have received in my teaching career from ecstatic students crowing about what they have just done with a spreadsheet model.
I have been teaching courses related to business and data analytics and modeling for over 40 years, and I have watched and participated in the spreadsheet revolution. During that time, I have been a witness to the following important observations:
• Each successive year has led to more and more demand for Excel-based analysis and modeling skills, both from students, practitioners, and recruiters.
• Excel has evolved as an ever more powerful suite of tools, functions, and capabilities, including the recent iteration and basis for this book—Excel 2013.
• The ingenuity of Excel users to create applications and tools to deal with complex problems continues to amaze me.
• Those students who preceded the spreadsheet revolution often find themselves at a loss as to where to go for an introduction to what is commonly taught to most undergraduates in business and sciences. Each one of these observations has motivated me to write this book. The first suggests that there is no foreseeable end to the demand for the skills that Excel enables; in fact, the need for continuing productivity in all economies guarantees that an individual with proficiency in spreadsheet analysis will be highly prized by anorganization. At a minimum, these skills permit you freedom from specialists that can delay or hold you captive while waiting for a solution. This was common in the early days of information technology (IT); you requested that the IT group provide you with a solution or tool and you waited, and waited, and waited. Today if you need a solution you can do it yourself.
The combination of the second and third observations suggests that when you couple bright and energetic people with powerful tools and a good learning environment, wonderful things can happen. I have seen this throughout my teaching career, as well as in my consulting practice. The trick is to provide a teaching vehicle that makes the analysis accessible. My hope is that this book is such a teaching vehicle. I believe that there are three simple factors that facilitate learning—select examples that contain interesting questions, methodically lead students through the rationale of the analysis, and thoroughly explain the Excel tools to achieve the analysis. The last observation has fueled my desire to lend a hand to the many students who passed through the educational system before the spreadsheet analysis revolution: to provide them with a book that points them in the right direction. Several years ago, I encountered a former MBA student in a Cincinnati Airport bookstore. He explained to me that he was looking for a good Excel-based book on data analysis and modeling—“You know it’s been more than 20 years since I was in a Tuck School classroom, and I desperately need to understand what my interns seem to be able to do so easily.” By providing a broad variety of exemplary problems, from graphical/ statistical analysis to modeling/simulation to optimization, and the Excel tools to accomplish these analyses, most readers should be able to achieve success in their self-study attempts to master spreadsheet analysis.
Besides a good compass, students also need to be made aware of the possible. It is not usual to hear from students “Can you use Excel to do this?” or “I didn’t know you could do that with Excel!”
The second edition of this book has updated to the current version of Excel, 2013. The additions and changes to Excel, since the first publication of the book, have been significant; thus, a revision was requested by many users. Additionally, topics have been extended for a more complete coverage. For example, in Chaps. 2–6 a more in-depth discussion of statistical techniques (sampling, confidence interval analysis, regression, and graphical analysis) is provided. Also, in numerous passages, changes have been made to provide greater ease of understanding.
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