Many years ago, I was doing some professional research on the GMAT scoring algorithm. I found several webpages on the topic, several of which were extremely informative. The authors would take the official GMAT Prep Software and run a variety of simulations with it, to see what types of strategies yield the best scores. The results were surprising—they showed that the total number of questions correct and incorrect is far from the only factor in determining one’s GMAT score. Well, the GRE is also a computer adaptive test (CAT), so I decided to do some research on the GRE PowerPrep II algorithm as well (new GRE scoring scale: 130 to 170). To my surprise, I have discovered that this information is nowhere to be found on the internet. So I decided to roll up my sleeves and do the research myself. First, some disclaimers: 1) I cannot guarantee that the algorithm on the actual GRE is exactly the same as the algorithm on the GRE PowerPrep tests, likely as that may be. 2) Doing these simulations took me forever. OK, not literally forever. But a lot of research (working through the software to double-check the answer keys) and a TON of mouse clicks (the PowerPrep tests don’t have keyboard shortcuts, and you have to start every test with 15 clicks). Every question requires two clicks, and there are 80 questions per test. Thus, there may have been a human error or two mixed in there, because I didn’t have time to double-check all of my simulations. If anyone wants to double-check my work, or to run additional simulations, then please, be my guest—the software is free to use and download—but running all the simulations myself took up too many hours of my life, and I am never doing that again. 3) I only ran simulations on PowerPrep test #1. I would assume that test #2 is the same scoring algorithm, but I cannot guarantee that. 4) Don’t forget that the real GRE (but not the PowerPrep practice tests) includes an experimental section in either Verbal or Quant, and it can be any of the sections. So you won’t necessarily know which sections are your first and second sections on the actual test. 5) If you are among the 2% of GRE test-takers taking the paper-based test, then you don't need to worry about PowerPrep. Instead, you should download the current paper-based GRE as well as the old one. These questions overlap with the PowerPrep II questions. BRIAN'S GRE POWERPREP 2 TEST SIMULATIONS AND SCORE ANALYSES: The first sections (Quantitative and Verbal) of the Powerprep CATs have only one version, which is of average difficulty. The second section has one of three possible versions (Easy, Medium, Hard), depending on your overall performance on the first section. Quant: 0-7 correct: Easy 8-14 correct: Medium 15-20 correct: Hard
Today we have hundreds of digital cameras available in the market to choose from. However, a lot of these digital cameras use different and, at times, difficult to open raw image file formats, instead of using a universal DNG (Digital Negative) format. Thankfully, there are a number of RAW to DNG converter software available online, that can help us in converting our photos to DNG format for viewing, editing and preserving them for future generations. We will discuss some of them here.
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The new Find My app combines Find My iPhone and Find My Friends into a single, easy-to-use app on iOS, iPadOS, and now macOS. Find My can help you locate your devices and your friends and family. And now it can help you find your devices even when they’re offline.
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Back in the day, Google had three or four applications with a reminder or to-do functionality. One could set the reminder through Google Keep, Google Assistant, Gmail, and Google feed. However, the consumers kept requesting Google to provide the tasks under a single umbrella instead of confusing them with a spread.
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