Learn how to do large-sample-proportion hypothesis testing in stats! From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps. For all of the details, watch this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials.
Need a hand figuring out how to do small-sample hypothesis testing in stats? From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps. For all of the details, watch this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials.
If you use Microsoft Excel on a regular basis, odds are you work with numbers. Put those numbers to work. Statistical analysis allows you to find patterns, trends and probabilities within your data. In this MS Excel tutorial from everyone's favorite Excel guru, YouTube's ExcelsFun, the 92nd installment in his "Excel Statistics" series of free video lessons, you'll learn how to use the TINV and TDIST functions to test a hypothesis.
So you need to find the p-value for your hypothesis test. To do so, employ the spreadsheet program Microsoft Excel. Using a simple formula, you can easily determine the p-value for your tests and thereby conclude strong or weak support of the null hypothesis.
Andy Field shows his audience how to perform the Spellbound magic trick. The video is set up as a tutorial which means he is explaining to the viewers how the trick is performed, or in other words what his secrets are. The trick itself is fairly complex and to grasp the full understanding of the concept it is recommended that you watch the video. According to Andy, most people already suspect how he is doing the trick, but he just wants to confirm their hypothesis. The video is five minutes a...
If you use Microsoft Excel on a regular basis, odds are you work with numbers. Put those numbers to work. Statistical analysis allows you to find patterns, trends and probabilities within your data. In this MS Excel tutorial from everyone's favorite Excel guru, YouTube's ExcelsFun, the 87th installment in his "Excel Statistics" series of free video lessons, you'll learn how to use NORMSINV to test a hypothesis with population standard deviation (sigma) known and proportions.
If you use Microsoft Excel on a regular basis, odds are you work with numbers. Put those numbers to work. Statistical analysis allows you to find patterns, trends and probabilities within your data. In this MS Excel tutorial from everyone's favorite Excel guru, YouTube's ExcelsFun, the 47th installment in his "Excel Statistics" series of free video lessons, you'll learn how to use the NORMSINV function for critical values and the NORSDIST function for p-values. Compare building confidence int...
There are all kinds of theories—many supported by science—about what causes Alzheimer's disease. Tangles of protein called ß-amyloid (pronounced beta amyloid) plaques are prominently on the list of possible causes or, at least, contributors. An emerging theory of the disease suggests that those plaques aren't the problem, but are actually our brains' defenders. They show up to help fight an infection, and decades later, they become the problem.
If you use Microsoft Excel on a regular basis, odds are you work with numbers. Put those numbers to work. Statistical analysis allows you to find patterns, trends and probabilities within your data. In this MS Excel tutorial from everyone's favorite Excel guru, YouTube's ExcelsFun, the 93rd installment in his "Excel Statistics" series of free video lessons, you'll learn how to use the NORMSINV and NORMSDIST functions to complete a hypothesis test about a population proportion.
Next time you don't want to make your bed, dry the dishes or clean the house there's no need to feel guilty. You may be doing yourself a favor. There are legitimate scientific reasons why some chores aren't always the best health choice.
We usually associate Salmonella bacteria with a dangerous type of food poisoning, but they actually are pretty good at seeking out tumors. That trait made the bacteria a great candidate to deliver a protein that would help knock tumors out.
Most of us have conducted an investigatory science project without even knowing it, or at least without knowing that's what it was called. Most science experiments performed, from elementary to high school students and all the way up to professional scientists, are investigatory projects.
Understand quantum physics and mind matter interface with an explanation from Dean Radin, Ph.D on "The Stupidity Hypothesis." Watch this video on learning how to understand science to improve your life.
Thought I would cross-post a piece I did a while ago.
Matteo Pisani, CTO and co-founder of Remoria VR, has managed to do something the folks over at Google said couldn't be done for at least a couple of years. With a little bit of tinkering, Pisani was able get his Google Daydream VR headset and remote to work on an iOS device.
Instinctively, we reach for popsicles and cold drinks when the temperatures climb, but doing something counterintuitive, like going for a hot drink or eating something spicy, is actually more effective at keeping you cool.
We might think of Zika as a mosquito-borne virus that effects developing fetuses, but, it also can be passed through sex by either a man or a woman, just like herpes and other STD viruses. New research has shown that vaginal bacteria can inhibit sexually transmitted Zika virus and Herpes Simplex Virus-2 in women.
Growing evidence suggests that neurodegenerative diseases like Parkinson's may develop in part due to environmental factors, including infections that can cause inflammation in the nervous system. New research from investigators from Jude Children's Research Hospital and Thomas Jefferson University has strengthened that connection.
When you think ticks, one of the first things to come to mind is Lyme disease. However, as terrible as Lyme disease is, there's another threat from ticks rising in rank in Connecticut and the Northeast — one that is spreading and that hospitals are not prepared for — the Powassan virus.
One booze hack that's been making the rounds for years is that inserting a spoon by the handle in a champagne bottle's neck will preserve its carbonation. This is one of those tips that I wish were true. Champagne is a great thing to have around on a special occasion, and it seems a shame to pour any leftovers down the drain once its lost its fizz. While there's lots of anecdotal evidence surrounding this trick, Harold McGee and Stanford University chemist Richard Zare debunked this myth as d...
Montezuma's revenge, the runs, the trots, or just diarrhea — everyone gets it sooner or later. What exactly is diarrhea good for, if anything?
The story of Helicobacter pylori is a real testament to the tenacity of medical researchers to prove their hypothesis. It took decades before the scientific world would accept that the bacteria H. pylori caused ulcers.
A continuation of my earlier science testing in Minecraft, I worked on a few things requested and retouched on TNT as there was suggestion of possible (and confirmed) altered circumstances.
A 6,000-year-old forest inhabitant awakens to find life in the forest around it in crisis. Plants, trees, animals, and birds are moving north to escape increasingly heated air, even as mass extinctions take place around the world. The inhabitant stirs and remembers it has lived this before and knows what to do.
Will the predicted apocalyptic date — December 21st, 2012 — really be the end of the world? In this ongoing five-part series, we examine what would happen if zombies, nuclear weapons, cyberwars, earthquakes, or aliens actually destroyed our planet — and how you might survive.
It's that time of year again when pizza boxes line the room and buffalo wings stain the couch. When cases of beer sit in the cooler and the big screen TVs are fired up and properly calibrated. When two of the best football teams vie for the championship title and the Vince Lombardi trophy.
Need to know how to use your Texas Instruments graphing calculator for your college math or statistics class? You're in luck... watch this video tutorial to see how to proportion population with a TI-83 graphing calculator.
Need to know how to use your Texas Instruments graphing calculator for your college math or statistics class? You're in luck... watch this video tutorial to see how to test a population mean with a TI-83 graphic calculator.
Here is my investigation on Teen Stress Base on FTA. QR/ER on Stress
The X-Ray Vision-aries Blog has compiled a list of YouTube's 100 Coolest Science Experiments. I particularly enjoy their introduction to the selection:
Studies with identical and non-identical twins show that between 50 and 80 percent of one's reported level of happiness is genetically determined.
Science fair projects can be stressful for students, for teachers and for parents, but they don't have to be. Check out this educational two-part video to see how to take some of that stress out of the science project building, so that you can have more fun with the project and learn something along the way.
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"Simplicity is the ultimate sophistication." -Leonardo da VinciLearning a kata requires that you go through several stages. First you have to learn the basic pattern and the techniques. Then you have to perfect what you've learned. Then you have to deconstruct what you've learned and perfected in order to truly understand what the kata is teaching you vis a vis close quarter engagement.
Sergio Peralta Advisor: Jessica Davis
The widely used expression "free as a bird" intimates an enviable existence: delicate, yet mighty wings transporting to destinations no human could so breezily venture. But despite their fanciful, superhero ability, in truth, the avian race leads one of the most difficult existences in the animal kingdom. Yes, birds have existed for eons—they likely evolved from small dinosaurs of the Jurassic period—but for these creatures, life can be ruthless.
Kurt Harris, MD, writes about paleolithic nutrition at his highly recommended blog, www.paleonu.com.
