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We saw three illustrations of False Positive in the first part of False Positive Primer. They were: Credit Card Fraud Detection & Prevention Covid-19 Test “Cry Wolf” Syndrome In this second part, we take up three more examples of this concept in statistics. #4. EMAIL SPAM FILTER Have you ever found your emails suddenly landing … Read more
I have been asked many times if I will use WhatsApp after its new privacy policy comes into effect in February. That’s not strictly true. I’ve been asked only once. Most recently by a woman on Twitter. So you will continue to use Whatsapp after February? Is that what you are saying? Monopoly means greater … Read more
Season’s Greetings & Best Wishes for a Happy New Year! Welcome back to GTM360 Blog. Our Top 10 blog posts in 2020 were: #10. Dr. Batra’s – A Sanitizer That Will Outlive The Virus #9. All Digital Payments Are Not Equal – Overview Of Payment Rails #8. Cross Selling Is Hard #7. How To Make “Work From Home” … Read more
Since companies comprise individuals, many people believe that companies and individuals will behave in an identical manner under the same situation. I disagree. There’s a big disconnect in the behavior of individuals versus companies. I can think of at least three reasons for this disconnect: Fiduciary responsibility Market cap Emotion #1. FIDUCIARY RESPONSIBILITY Let me … Read more
I concluded my blog post entitled Demystifying The Ubiquitous Sample Size Of 2000 on the following note: A survey with a sample size of merely 2000 can deliver statistically significant results for a population of millions provided the sample is representative of the population, which is determined by how homogeneous or heterogeneous the population is. … Read more
This is a slightly edited version of my answer to the following question on Quora: How is it that Amazon doesn’t make a profit, yet Jeff Bezos’ net worth is in the billions? The question is temporally flawed since Amazon does make profits today. But there was a time when Amazon made losses and still Jeff … Read more
The Netflix show Social Dilemma has rekindled the eternal controversy over privacy, tracking, and manipulation by digital companies. As consumers, many of us outrage at brands for using our private information to target us with personalized communications, ads and targeted offers. In this post, I’m going to go out on a limb and argue that … Read more
In Don’t Go Global Without Cracking The Value Proposition For Foreign Markets, I’d unpacked the dangers of taking your product global before cracking its value proposition for foreign markets. I’d taken the example of UPI in that post. Now, I’ll take RuPay, another product from UPI-owner NPCI. For the uninitiated, RuPay is a homegrown payment card … Read more
We hear a lot of talk about False Positive and False Negative these days. Along with True Positive and True Negative, they constitute important principles in statistics. In general, this is what the terms mean in the context of a test for X: True = Test is right False = Test is wrong Positive = … Read more
It’s fashionable to dunk on Excel and Access in many quarters. Take The Register for example. It blames Excel for under-reporting 16,000 Covid-19 cases in What a Hancock-up: Excel spreadsheet blunder blamed after England under-reports 16,000 COVID-19 cases, and Access for inventory discrepancies in Excel is for amateurs. To properly screw things up, those same … Read more