#Confounding Variables

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#Confounding Variables Reel by @katiec.pac (verified account) - ALUMINUM EXPOSURE IS NOT RELATED TO CHRONIC HEALTH OUTCOMES, or is it? If you haven't heard, a new Danish study done by Andersoon and colleagues stud
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@katiec.pac
ALUMINUM EXPOSURE IS NOT RELATED TO CHRONIC HEALTH OUTCOMES, or is it? If you haven’t heard, a new Danish study done by Andersoon and colleagues studied over a million children from ages 2-5 who were exposed to LOW amounts of aluminum or HIGH amounts of aluminum in vaccines and tracked over 50 health outcomes. They found there was NO SIGNIFICANT DIFFERENCE in adverse health outcomes with low or high exposure to aluminum. Sounds great right? Well I still have questions. THEY DIDN’T STUDY THE UNVACCINATED ON THEIR OWN. They were lumped in with the low exposure group. They had several exclusion criteria that could’ve influenced the results of the study. They also adjusted for several confounding variables that may not have been necessary. I highly recommend checking out @drjoelgator posts about this study, he shows how simple statistical tricks could be used to completely change the outcomes of the study. LEAVE A COMMENT if you think the science is truly settled on this issue, or if we need more research�
#Confounding Variables Reel by @shivanatalks - Are rich people better at delaying gratification? Does not eating a marshmallow in kindergarten make you more successful as an adult? …Or is it possi
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@shivanatalks
Are rich people better at delaying gratification? Does not eating a marshmallow in kindergarten make you more successful as an adult? …Or is it possible that a study from 1970 missed some pretty significant confounding variables? #delayedgratification #success #personalfinance #richtok stanford marshmallow experiment, privilege, delayed gratification
#Confounding Variables Reel by @brianboisvert - Nothing a run coach likes to hear more than "is this a good heart rate" without any context (*sarcasm*). Heart rate is extremely variable between ath
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@brianboisvert
Nothing a run coach likes to hear more than "is this a good heart rate" without any context (*sarcasm*). Heart rate is extremely variable between athletes and is often incorrectly measured via wearables sorry, Garmin!! Aerobic decoupling (pa:HR on TrainingPeaks) can be a fantastic way to measure the progression of your heart rate throughout a session. On a run over 60 minutes, this metric compares the pace/power output to HR ratio from the second half of the run to the first. If that ratio is 0-5%, you're in a comfortable position. 5%+ means your HR elevated too quickly compared to your pace/power output. A negative number means that ratio went down throughout, which probably means there were some confounding variables at play, hills at the beginning.
#Confounding Variables Reel by @quant_research_decoded - The model shown (Λ-Vol) is part of a broader series of Volatility Frameworks developed during my time as Quant Researcher at my current firm: Λ-Vol m
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@quant_research_decoded
The model shown (Λ-Vol) is part of a broader series of Volatility Frameworks developed during my time as Quant Researcher at my current firm: Λ-Vol models Volatility as the interaction of regime conditions, reinforcing and stabilising market feedback and risk absorption. It tracks how volatility pressure builds, propagates and unwinds across assets and horizons. We first started by first deriving it at an equations / mathematical level, then building up the framework from there. 📣 To learn more check the link in my Bio. Quant Researchers are hired to find solutions to questions that may come down from their portfolio manger for example. There are no solutions that are found in papers. Academics publish papers as it’s a crucial part of their career. However in industry, researchers are funded by their place of work. Research is privatised for profit. A quant researcher’s role is to develop NEW methods not found in public academic papers. Academic papers certainly play an important role, however a quant researcher would be rendered redundant if solutions were so easily and directly extrapolated from a paper. #quant #ai #quantfinance #datascience #investing
#Confounding Variables Reel by @code_helping - Every program needs a way to store information, and that's where variables come in 🧱💻. . A variable is like a small box that holds data, and you can
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@code_helping
Every program needs a way to store information, and that’s where variables come in 🧱💻. . A variable is like a small box that holds data, and you can give it a name so the program can use it later 🏷️ . 📦. Data types define what kind of information that box can store—like numbers 🔢, text 🔤, true/false values ✔️❌, or decimals 🎯. Choosing the right data type makes programs faster, safer, and easier to understand. . . . #programmingbasics #variables #datatypes #backenddevelopment #systemdesign #databasemanagement #mysql #mongodb #postgresql #mernstack #codingtips #techlearning #code_helping #codingforbeginners #learncode #computerscience #codingstudent #techlearning #developerjourney
#Confounding Variables Reel by @datascience.swat - Corelation vs Causation credits; agi.lambda Follow @datascience.swat for more daily videos like this Shared under fair use for commentary and inspir
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@datascience.swat
Corelation vs Causation credits; agi.lambda Follow @datascience.swat for more daily videos like this Shared under fair use for commentary and inspiration. No copyright infringement intended. If you are the copyright holder and would prefer this removed, please DM me. I will take it down respectfully. ©️ All rights remain with the original creator (s)
#Confounding Variables Reel by @quant_lore - Covariance Matrix: The Complete Breakdown 📈 Covariance Matrix is a foundational concept in quantitative finance that governs how quantitative analys
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@quant_lore
Covariance Matrix: The Complete Breakdown 📈 Covariance Matrix is a foundational concept in quantitative finance that governs how quantitative analysis operates. Markowitz proved in 1952 you need both to optimize a portfolio. And the eigenvalues of that matrix reveal hidden risk factors. The way covariance matrix works comes down to one key principle. That's why Ledoit and Wolf developed shrinkage estimators. You pull extreme values toward a structured target. Cleaner matrix, better portfolio weights, fewer blowups. Covariance Matrix matters because it shapes how quantitative finance functions at scale. The largest eigenvalue often captures broad market movement across all assets. JPMorgan's RiskMetrics system literally built its entire framework around estimating covariance matrices. You can see covariance matrix in action everywhere. follow for quant simplified every week The key takeaway is this: Understanding covariance matrix gives you a clearer lens on quantitative finance and the systems built on top of it. 📌 Save this breakdown before your next quant interview #CovarianceMatrix #finance #quant #trading #wallstreet #optionspricing #portfoliooptimization #riskmanagement
#Confounding Variables Reel by @fab_ali_khan - KARL PEARSON COEFFICIENT OF CORRELATION || BUSINESS STATISTICS-1 || PART-1 || UNIT-5|| SEMESTER-3
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@fab_ali_khan
KARL PEARSON COEFFICIENT OF CORRELATION || BUSINESS STATISTICS-1 || PART-1 || UNIT-5|| SEMESTER-3
#Confounding Variables Reel by @madhu.codecrux - Comment "VARIABLES" ⬇️ if you want notes on this topic ❌ **Beginner Mistake:** Thinking variables are *just boxes* that store values. 📦 👉 Truth en
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@madhu.codecrux
Comment “VARIABLES” ⬇️ if you want notes on this topic ❌ **Beginner Mistake:** Thinking variables are *just boxes* that store values. 📦 👉 Truth enti ante… variables are much more than that: - Variable create chesthe → **RAM lo memory space allocate avthundi.** - The **name** is just a label for that memory location. - The **value** is actually stored inside memory (address). - Program run avuthundi → compiler/interpreter label ni check chesi → value ni fetch chestundi ⚡ 🔥 So, variables are not *just boxes*… they’re actually the **bridge between human code and machine memory.** 🔖 Save this reel — fundamentals like these make coding crystal clear. #webdevelopment #webdev #javascript #react #programming #website #coding #webdesign #html
#Confounding Variables Reel by @chadparkerlaw - US inflation is stable at 2.4%, cooling before recent global tensions. Current price spikes aren't due to domestic runaway inflation. Full context in
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@chadparkerlaw
US inflation is stable at 2.4%, cooling before recent global tensions. Current price spikes aren't due to domestic runaway inflation. Full context in podcast! #Inflation #Economy #CNBC #BusinessNews #FinancialLiteracy #MarketUpdate #PodcastClip
#Confounding Variables Reel by @drjessicaknurick (verified account) - In today's media environment, it's easy to fall for flashy graphs and bold claims said confidently. But it's vital to remember that correlation does
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@drjessicaknurick
In today’s media environment, it’s easy to fall for flashy graphs and bold claims said confidently. But it’s vital to remember that correlation doesn’t mean causation. Understanding this protects you from being misled by fear tactics, fake science, and propaganda. 🛑 #medicalmisinformation #nutritionmisinformation #correlationdoesnotequalcausation
#Confounding Variables Reel by @vince.quant - Why quants never trust their covariance matrix ? Most portfolio optimization models rely on the covariance matrix. 500 stocks = 125,000 parameters
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@vince.quant
Why quants never trust their covariance matrix ? Most portfolio optimization models rely on the covariance matrix. 500 stocks = 125,000 parameters to estimate from only 252 trading days. More relationships than data points. Most of what you estimate is noise. Marchenko and Pastur (1967) showed that pure random data produces a predictable eigenvalue distribution. Overlay it on real data and you can separate signal from noise. On S&P 500 data, only a handful of eigenvalues sit above the noise band. The rest is random fluctuation. That’s why quants clean the matrix before optimizing, using eigenvalue clipping, shrinkage (Ledoit-Wolf), or other regularization methods. Factor models and Bayesian approaches also address the same problem. The core idea: if you don’t question your inputs, no optimizer will save you #quant #algotrading #trading #portfoliomanagement #finance

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