Started this discussion. Last reply by Sandy Ayer Jun 15. 1 Reply 1 Like
I want to test the optimum price for some items sold online. One way to do it is to set two different prices and do some A/B testing to see which price generates the most revenue, or comparing…Continue
Started this discussion. Last reply by Andrew Reid Mar 15. 2 Replies 0 Likes
I believe biostatisticians use it, especially with small data sets, in the context of clinical trials, especially when using dummy variables (e.g. 0/1 for gender.) I am wondering how decision trees…Continue
Started this discussion. Last reply by Michael Rawson May 18, 2018. 2 Replies 1 Like
Maybe this seems like science fiction, but I was wondering if some companies are developing robots that are so small, that they are about the size of a virus. You could imagine a swarm of robotic…Continue
Started this discussion. Last reply by Frank Raulf Jun 4. 6 Replies 3 Likes
Weather predictions are notoriously difficult for the Seattle area. I have seen many instances in which snow was predicted (say 1 to 3 inches) while the actual amount was much smaller. I assume that…Continue
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Christian Schitton liked Capri Granville's blog post Free Textbook: Probability Course, Harvard University (Based on R)Sandy Ayer replied to Capri Granville's discussion Questions about A/B and Multivariate TestingPosted on June 10, 2019 at 5:00pm 0 Comments 0 Likes
I found an interesting websites featuring hundreds of charts derived from US census data. It shows contrasts between states, cities, regarding education, jobs, languages spoken, salaries, even discrepencies between men and women or Asians and Caucasians, regarding various metrics broken down by location, education, or other criteria. I selected four of these charts.…
ContinuePosted on June 9, 2019 at 8:00am 1 Comment 2 Likes
This chart communicates the same insights as a contour plot. What is interesting is the choice of hexagonal buckets (rather than squares) to aggregate data. In fact, any tessellation would work, in particular Voronoi tessellations.…
ContinuePosted on May 23, 2019 at 9:00am 0 Comments 1 Like
Not to be confused with this free Microsoft book with same title.
Data science underlies Amazon's product recommender, LinkedIn's People You Know feature, Pandora's personalized radio stations, Stripe's fraud detectors, and the incredible insights arising from the world's increasingly ubiquitous sensors. In the future,…
ContinuePosted on May 23, 2019 at 9:00am 0 Comments 2 Likes
I stumbled upon this book by chance, when searching for material about time series (probably the most interesting chapter in this collection.) The various chapters are accessible from the top tabs, on this web page. It is mostly about R, but it has a few interesting chapters on statistical science too. Below is a…
Continueaman Ullah said… Question: A researcher is interested in actual data to research in patterns and build a model for prediction. My question is that if a researcher is interested in actual data why we transform data?
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