Air is a public good and in any society with common sense, it should be a top government priority to provide clean air. Alas, as we wait for that common sense to dawn on us, let's at least mask up in the meantime. #SkySky AirQuality

LogProbs is a cool Prompt Engineering skill. 🤖📈 #Statsky #Stats #AI #LLM medium.com/@saikrishna_...

One key insight about the impact of LLMs on creative writing from Andrej Karpathy’s LLM Deepdive: medium.com/@saikrishna_... #AI 🤖📈 #LLM #WritingCommunity

When I write stories, I ensure that I have the climax first with all its payoffs 😁

#Poetry #TinyPoem

Survey of 416 residents. The polling group has a sampling error of 3% in their familiar territories. 95% Confidence Interval falls below 50%. Yet the audacity/ignorance to claim that entire Greenland supports to be adopted by the US. 🏛️ #rstats #PASky 🤖📈 #Stats

𝐖𝐡𝐞𝐧 𝐬𝐡𝐨𝐮𝐥𝐝 𝐲𝐨𝐮 𝐛𝐫𝐮𝐬𝐡 𝐲𝐨𝐮𝐫 𝐭𝐞𝐞𝐭𝐡? 1. Brush twice a day — Morning and Night after dinner. 2. Morning, it’s better to 𝐛𝐫𝐮𝐬𝐡 𝐚𝐟𝐭𝐞𝐫 𝐛𝐫𝐞𝐚𝐤𝐟𝐚𝐬𝐭. If you find it scandalous, read this blog! medium.com/@saikrishna_... #rstats #Stats #StatSky 🤖📈

Don’t wanna be the best #Poetry #TinyPoem

Greed #Poetry #TinyPoem

Trident of endeavour Science works, finds truths Business pays, fulfils desires Power lies, frauds morals #Poetry #TinyPoem #haiku

Happy New Year! #Poetry #TinyPoem

Farts of a city #Poetry #TinyPoem #AirQuality

Trying my hand at writing poems 🌝 Thanks to Douglas Kearney’s course! www.coursera.org/learn/poetry... #Poetry #TinyPoem

TL;DR Paper tried to compare air quality between land cover classes using Kruskal Wallis tests link.springer.com/article/10.1... But practical significance seems neglected for statistical significance. What do you say? #Stats #rstats 🤖📈 medium.com/@saikrishna_...

Grove air quality sensor + ESP8266 reporting indoor air quality to a google sheet every 10 minutes #IoT github.com/d-saikrishna...

🏛️ Interesting argument on lack of democratic accountability 🏛️ osf.io/preprints/os... 1. It’s not the lack of awareness. But political partisanship is an obstacle to accountability. 2. Lack of social capital. Public support to policies that preserve public goods reduces if there is personal cost

This is my yearly reminder that published results of coefficients using logistic regression in Python are likely wrong because they are L2 penalized by default: github.com/scikit-learn... #rstats #statistics #digitalhumanities

If I ask you to forecast pollution in Delhi on some random day, you'd say a number X If I further ask you to forecast on a Winter Day, you'd top up X with some y This is Bayes theorem running in your head. This blog attempts to quantify it medium.com/@saikrishna_... #rstats #stats 🤖📈

No answers :/ Anyways. Even without an uninformative prior, we provide a bounded prior in a Bernoulli trial. P(p) = 1 (when 0<=p<=1) P(p)=0 (otherwise) So the bayesian estimates are informed of this bounded nature of p. The MLE doesn’t consider that. Hence the difference. #rstats #stats 🤖📈

Quiz time! Why is the Maximum Likelihood Estimate (MLE) of probability of success (p) in a Bernoulli trial not equal to the Bayesian Estimate? p_mle = r/n p_bayesian = (r+1)/(n+2) (Assuming uninformative prior) r = number of successes n = number of trials #rstats #stats 🤖📈

So if x^2 is the confounder, adding x to the model may not completely remove the Omitted Variable Bias 😬😬😬 Seems obvious now. But wow, that’s an interesting thing! Makes causal inference more complex

𝐖𝐡𝐚𝐭 𝐢𝐬 𝐢𝐧𝐟𝐨𝐫𝐦𝐚𝐭𝐢𝐨𝐧? It impinges on a thinking mind and makes it change its opinion. How should this change be affected? 𝐁𝐀𝐘𝐄𝐒 𝐓𝐇𝐄𝐎𝐑𝐄𝐌. 𝐓𝐡𝐞 𝐥𝐢𝐤𝐞𝐥𝐢𝐡𝐨𝐨𝐝 𝐟𝐮𝐧𝐜𝐭𝐢𝐨𝐧 𝐠𝐞𝐧𝐞𝐫𝐚𝐭𝐞𝐝 𝐛𝐲 𝐭𝐡𝐞 𝐝𝐚𝐭𝐚 𝐢𝐬 𝐭𝐡𝐞 𝐈𝐧𝐟𝐨𝐫𝐦𝐚𝐭𝐢𝐨𝐧 - an extract from an autobiographical essay of statistician Debabrata Basu #stats #rstats 🤖📈

Freshly published: Assessing Air Quality during India’s National Clean Air Programme (NCAP) www.sciencedirect.com/science/arti...

🏛️ A good read for policy folks 🏛️

How can a causal variable become useless in prediction? 100% Mediation in Action! medium.com/@saikrishna_... #rstats #stats #Statistics 🤖📈

Time to revise “Value of Science” essay by Richard Feynman calteches.library.caltech.edu/1575/1/Scien...

🏛️ Wonderful work 🏛️

Cofounder causal diagram will become mediator causal diagram when we turn it. Both variables will be needed to get the unbiased effect of the Mediator. Mediator should be removed to get the unbiased effect of Confounder. #Stats is absurd at times :p #rstats 🤖📈 medium.com/@saikrishna_...

Wrote a short story about a very important hobby :) dsaikrishna.substack.com/p/retire

Visualize Collider Bias with me. Wrote this for myself. To get an intuitive understanding of Collider bias without any regression equations and lines. Hope it helps other learners as well! medium.com/@saikrishna_... #stats #rstats

Work with air quality or climate data? Here are a few ways to visualize them. Python codes: github.com/urbanemissio... What other interesting visualisations can be made? #stats 🤖📈

Quiz time. Why don't we use Generalized Least Squares (GLS) as the default linear regression method instead of making assumptions like equal variance, Independence of errors for the sake of OLS? #rstats #stats

#Bsky is amazing! Even stackexchange couldn’t answer this for me. But, Bsky took this question to the right people. Thank you @pdalgd.bsky.social !

Humans have been counting for at least 50,000 years. We counted to keep track of data such as group members size, property, or debts - using bones, tally marks, numbers, etc. A statistician continues this human enterprise of counting and counts well. #stats #rstats link.medium.com/WoGj8FBvQOb

A Nature journal’s brief on finding human inclination to tilt right while kissing reported a chi-square #stats of 5.34. But, when I calculated it, I got 10.45. Am I wrong? Or what’s wrong here? #rstats 🤖 stats.stackexchange.com/questions/65...

Question. What is the best way to query a HUGE polygons layer on PostGIS - using a small grid polygon. Basically, I only want the polygons in the grid. Tried to intersect both layers, but it is taking forever to run. Any hacks? #GIS #Geospatial

One of the foremost Statisticians from India PC Mahalonobis: #Statistics is a universal tool of inductive inference, research in natural & social sciences & tech applications #Stats .'. must always have purpose, either in the pursuit of knowledge or in promotion of human welfare #StatsSky #rstats

When we do OLS regression, we assume normality of errors to calculate prediction intervals. This issue becomes critical there. We can still estimate conditional expected value of the response E(Y|X) without this assumption, but can’t make individual predictions. #rstats #Statistics #DataScience

I write Applied/Computational #Statistics blogs Here is my latest one on the Omitted Variable Bias (OVB) that messes up causal inferences and other interpretations of an OLS regression. medium.com/@saikrishna_... Let's see how #bluesky reacts! #DataScience #rstats #stats #StatEd