Statistics for the Rest of Us
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About this ebook
Are you intimidated by statistics? Do you struggle to make sense of the numbers and data that are so prevalent in today's world?
If so, you're not alone. Statistics can be a challenging and complex subject, but with the right guidance, you can learn the basics and understand the world through data – without the calculations. That's why I've created Statistics for the Rest of Us, the ultimate guide to understanding statistics without complex equations.
Statistics is a vital subject to learn.
Statistics is used in almost every field and industry imaginable. From healthcare to finance to marketing, statistics are used to make important decisions, identify patterns and trends, and predict future outcomes. Without a basic understanding of statistics, it's easy to be left behind and taken advantage of.
If you wonder where should you start, start here.
Statistics for the Rest of Us takes a step-by-step approach to teaching the fundamentals of statistics ensuring that you'll never feel lost or overwhelmed. Whether you're a complete beginner or simply need a refresher, this book will guide you through the fundamental concepts in descriptive and inferential statistics. Simple. Easy-to-follow.
Avoid getting misled and manipulated.
From determining the average age of your customers, the most popular product in your store, or the likelihood of a patient recovering from a particular illness, you can use this statistics manual to seek answers or to interpret the answers of others. The possibilities are endless, and with Statistics for the Rest of Us, you'll be equipped to make sense of it all.
This book is for you especially if you're not a math person.
Don't worry, this book is designed for the math shy. Written in a clear, jargon-free language and an abundance of real-world examples, Statistics for the Rest of Us will help you understand the concepts and apply them to your advantage.
Albert Rutherford is an internationally bestselling author whose writing derives from various sources, such as research, coaching, academic, and real-life experience.
What can you expect to learn from Statistics for the Rest of Us? Here's just a taste:
- The difference between descriptive and inferential statistics, and when to use each
- How to statistics is applied in your everyday life
- The 5 biggest misuses of statistics and how to spot them
- How to interpret and create statistically relevant analyses
- The very basics of the Bayesian Theorem – in plain English
How to become highly sensitive to data manipulation
Unlock the power of statistics, take your understanding of data to the next level, and start your journey towards statistical mastery.
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Statistics for the Rest of Us - Albert Rutherford
Statistics for the Rest of Us
- Mastering the Art of Understanding Data
Without Math Skills
By Albert Rutherford
www.albertrutherford.com
Copyright © 2023 by Albert Rutherford. All rights reserved.
No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, scanning or otherwise, except as permitted under Section 107 or 108 of the 1976 United States Copyright Act, without the prior written permission of the author.
Limit of Liability/ Disclaimer of Warranty: The author makes no representations or warranties regarding the accuracy or completeness of the contents of this work and specifically disclaims all warranties, including without limitation warranties of fitness for a particular purpose. No warranty may be created or extended by sales or promotional materials. The advice and recipes contained herein may not be suitable for everyone. This work is sold with the understanding that the author is not engaged in rendering medical, legal or other professional advice or services. If professional assistance is required, the services of a competent professional person should be sought. The author shall not be liable for damages arising herefrom. The fact that an individual, organization of website is referred to in this work as a citation and/or potential source of further information does not mean that the author endorses the information the individual, organization to the website may provide or recommendations they/it may make. Further, readers should be aware that Internet websites listed in this work might have changed or disappeared between when this work was written and when it is read.
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Table of Contents
Chapter 1: Why You Need This Book
Chapter 2: Fundamentals Of Statistical Analysis
Chapter 3: Gathering And Interpreting Data
Chapter 4: P Values And Bayes’ Theorem
Chapter 5: Statistical Thinking
Chapter 6: Applied Statistics In Real Life
Chapter 7: Visual Displays: Telling Stories Through Images
Chapter 8: Misinterpretation Of Statistics: 5 Common Pitfalls
Chapter 9: Data Manipulation And The Power Of Graphs
Chapter 10: Conclusion
Before You Go...
About The Author
Resources
Endnotes
CHAPTER 1: WHY YOU NEED THIS BOOK
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Have you ever been watching tv and seen an advertisement for a product that convinced you to try it? The ad might have featured some statistics that made the product seem even more enticing (98% of people who tried this reported improved symptoms! On average, people lost 25 pounds on this medication! 87% of people interviewed responded favorably to our question!). Advertisers, politicians, and anyone else looking to make a point often cite numbers in their arguments, knowing that those numbers can sway the average consumer or voter. Most of us see a number that sounds convincing and believe it without question – 98% of people felt better on that? I've got to try it!
Numbers are a powerful weapon. The advertisers, politicians, and others who use numbers usually (but not always!) know they can be misleading. Maybe the ad citing 98% didn’t tell you that the population they sampled included only people whose condition was in remission. Or maybe the average
person on a weight loss drug lost 25 pounds, but they sampled one person who lost 150 pounds and five people who lost nothing. Statistics can be manipulated to present all sorts of arguments, only some of which are valid.
Sometimes misinterpreted or misapplied statistics can take hold and become a common belief. In the 1980s and 1990s, a study published in prestigious scientific journals concluded that left-handed people die, on average, nine years younger than right-handed people.[i] If you're a lefty, someone has probably quoted this statistic to you ominously. Reporters popularized some theories you may have heard, including those cited in the Los Angeles Times. The researchers attributed much of the dramatic increase in accidental deaths to the fact that most machines are designed for right-handers. Certain neurological and immunological defects often associated with left-handedness were also thought to play a role in the shortened life spans.
[ii] If you’re left-handed, you’re more likely to die in an accident, and there may even be something wrong with your brain!
But it turns out all those theories are irrelevant because there was a flaw in the study. The researchers, Diane Halpern and Stanley Coren, noted that the proportion of lefties in the general population skews younger (a greater percentage of young people are lefties than older people). The LA Times reported, In the population at large, about 9% of women and 13% of men are left-handed, but previous studies have shown a peculiar age distribution. At the age of 10, 15% of the population is left-handed. At 20, 13%. By 50, the figure drops to 5%. And by 80, it is less than 1%. ‘That’s what initially got us interested in studying this,’ Halpern said.
Halpern and Coren drew an incorrect conclusion, though. Their research involved surveying the families of people who had recently died and asking if they had been left- or right-handed. When the results came back that a higher percentage of the younger people who had died had been left-handed, they concluded that something about left-handedness was to blame. But they failed to consider that many of the older people who had recently died probably would have been left-handed if they were raised today. For several generations, left-handedness was stigmatized, and school-aged kids who presented as left-handed were trained to become right-handed.[iii] Surveying the families of those who died didn’t yield accurate data about who was born left-handed and who wasn’t.
In the left-handedness study, there was a hidden bias in the sample (fewer older lefties existed because of a reason that wasn’t taken into account in the study). Here's another example of hidden bias affecting