One of Microsoft Excel's capabilities is to allow you to graph Normal Distribution, or the probability density function, for your busines. This is a quick and easy tracking feature you can learn in just a few minutes.
In this lesson, you will learn how to solve a probability word problem. Need help with your algebra and geometry? Well... P(event)= Number of favorable outcomes / Total number of outcomes In the above problem, the number of favorable outcomes is 4 because there are $ blue ma ...more
Probability computation is a complex process and even using a calculator can be difficult. But normal probability calculations can be performed quickly with the help of calculator once you know how to use it. So when you have to calculate a probability from a normal distributi ...more
Calculating probablities can be used to help us make decision. PatrickJMT explains how to calculate probability in an "either A or not A" scenario. The probability of A plus the probability of not A is equal to one. Therefore, the probability of A is equal to one minus the pro ...more
New to Microsoft Excel? Looking for a tip? How about a tip so mind-blowingly useful as to qualify as a magic trick? You're in luck. In this MS Excel tutorial from ExcelIsFun, the 55th installment in their series of digital spreadsheet magic tricks, you'll learn how to calculat ...more
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 do binomial probabilities with a TI-83 graphing calculator. Binomial probabilities. A pack of M&M's contain ...more
In this math lesson we will learn how to solve simple probability problems with a number cube. The probability of an event measures the likelihood that the event will occur. When trying to find the probability of an event, use this formula: P(event) = number of favorable ou ...more
This video explains how to solve the problem of probability dependent events. In this video the problem is that a box contains three pens, 2 markers, and 1 highlighter. The person selects one item at random and does not return it to the box. So what is the probability that the ...more
In this video, we learn how to use probability to predict weather. Probability is the chance of something happening. If you want to know what the weather is going to be like, you can look at the weather report and see what each day is going to do throughout the week. Ask yours ...more
In this permutation and combination math tutorial, we will learn how to find the number of possible arrangements in a set of objects. So, if you need help with your algebra or geometry homework, watch this. An arrangement of a set of objects in a certain order is called a PER ...more
First of all you need two different types of playing cards. You can take the blue and the red color cards. Spread these cards on the table facing downwards. Now mix them together randomly. Again mix them as thoroughly as you can on the table. Now pick out a red color card of y ...more
Video covering how to set up a Venn diagram. The video covers how to draw the diagram and then look at a set of data and place the data in the correct part of the Venn diagram. The sample problem is as follows. Hector has entered the following names in his contact list of his ...more
Watch the following math probability video to learn how to find the probability of two independent events. This will help you with your algebra or geometry homework. Two events are independent if the outcome of one event does not influence the outcome of the second event. To ...more
In this video the tutor shows how to read a tree diagram. He shows an example of a tree diagram and says that tree diagram represents the choices made by a student in a cafeteria by ordering different kinds of foods and the chain in which the they are ordered. Now every combin ...more
This is a very basic overview of probability, possibly intended for an eleven year old. It is a very good introduction to probability for one that has never encountered probability before. The instructor is not always clear in his intentions. Someone watching this video would ...more
In this video you will learn how to use probability of dependent events. The video starts with a small advertisement to there website http://www.yourteacher.com. Then its followed up by a math instructor taking you through a example problem to help you understand how you can b ...more
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 (or just finish your homework or study for that next ...more
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. Probability valu ...more
Welcome back, my greenhorn hackers! I began this series on scripting awhile back to teach all aspiring hackers how to write some basic scripts for hacking and reconnaissance. Without developing some basic scripting skills, the aspiring hacker will be condemned to the realm of ...more
Welcome back, my rookie hackers! So many readers come to Null Byte to learn how to hack Wi-Fi networks (this is the most popular hacking area on Null Byte) that I thought I should write a "how-to" on selecting a good Wi-Fi hacking strategy. Many beginners come here looking t ...more
To some, SCRABBLE is just a board game to play during family game night or during a casual get-together. Others think of SCRABBLE as a mere hobby. But with any activity, there will always be fanatics—the ones who would rather sell their soul than stop—the ones with a constant ...more
Brute-forcing is an easy way of discovering weak login credentials and is often one of the first steps when a hacker finds network services running on a network they gain access to. For beginners and experienced hackers alike, it's useful to have access to the right tools to d ...more
Welcome back, my nascent Hackers! In my last blog, we looked at a passive way to gather information necessary for a hack. The advantage of using passive recon is that it's totally undetectable, meaning that the target never knows you're scouting them and you leave no tracks. ...more
Welcome back, my novice hackers! Most of my tutorials up until this point have addressed how to exploit a target assuming that we already know some basic information about their system. These include their IP address, operating system, open ports, services running, and so on. ...more
Here is a list of links you can use to ask for or give special gifts. First you need to find your Facebook ID number and copy it down somewhere, or memorize it if you can, then paste it into the links replacing the ###### symbols. You can find your ID number in the address b ...more
To name just a few companies, VK, µTorrent, and ClixSense all suffered significant data breaches at some point in the past. The leaked password databases from those and other online sites can be used to understand better how human-passwords are created and increase a hacker's ...more
Welcome back, my novice hackers! I've written a couple of articles on reconnaissance and its importance, and as I've said before, a good hacker will spend 3 to 4 more times doing reconnaissance than actually exploiting the system. If your recon isn't good, you'll likely fail, ...more
This video shows you how to do a mathematical representation on computing the nCr function using a TI-89 calculator. You can write the nCr notation in different forms. It can be simplified from nCr to C(n,r). The symbol can either be read "n choose r" or "n taken r at a time" ...more
Stuffing is a time and click intensive chore which, when done correctly, can bring you AND your neighbors great rewards! Update! As of November, FarmVille Breeding has changed! There is now much less clicking to do! 1. have a Full building 2. remove 1 animal 3. put in 1 r ...more
In this video tutorial, viewers learn how to calculate the standard deviation of a data set. The standard deviation of a statistical population, a data set, or a probability distribution is the square root of its variance. To calculate the standard deviation, users will need t ...more
Bluetooth 5 was announced and made officially available on December 7, 2016. It comes with a handful of improvements to speed, range, maximum device connectivity, and anti-interference from other nearby devices. While this might be great for those special few who use Bluetooth ...more
Last year, your iPhone's Weather app received some great features, but things are even better now with the latest iOS 17 version. Apple's Weather app has been around since the very beginning. In 2007, it provided little information, mainly consisting of the seven-day forecast ...more
Penetration testing, or pentesting, is the process of probing a network or system by simulating an attack, which is used to find vulnerabilities that could be exploited by a malicious actor. The main goal of a pentest is to identify security holes and weaknesses so that the or ...more
Learn how to use the empirical rule (or 68-95-99.7 rule) to estimate probabilities for normal distributions in statistics. From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, than ...more
As was mentioned by the great OTW last week, TOR, aka The Onion Router, has had its integrity attacked by the NSA. In an attempt to reduce the anonymity granted by the service, the NSA has opened a great many nodes of their own. The purpose is presumably to trace the origin of ...more
Lyme is a growing threat as we move into warmer weather in the US. Researchers have said this year could be one of the worst for this tick-borne disease, as a skyrocketing mouse population and warmer temperatures increase the risk. Knowing where this risk is highest is going ...more
Last weekend the 2011 World Scrabble Championship was held at the Hilton Hotel in Warsaw, Poland. There were 106 players competing from 44 countries for the $20,000 first place prize and title of World Scrabble Champion. Players spend years mastering their Scrabble skills in ...more
Last week's challenge brought up a good question (thanks Lisa) regarding the functionality of the Official Scrabble Players Dictionary, 4th Edition, both online and in print form. The word TACTICAL was the answer to the first puzzle in that challenge, but when you search for t ...more
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 use the central limit with a TI-83 graphing calculator. Central limit theorem. The CB&O pet food company ma ...more
For lack of a better word, a missing iPhone sucks. Not only do you lose a physical device that cost you a small fortune, but there's also the probability you'll never see your precious data again. Hackers and thieves might, just not you. To keep this from ever happening, there ...more
Welcome back, my rookie hackers! For some time now, I have been contemplating this issue, can we hack back the hackers? As someone who plays on both sides of the cyber security ping pong match, I've wondered whether I can use my hacking skills in self-defense of my clients. A ...more
If you've been to a farmer's market during tomato season, chances are you know that heirloom tomatoes are pricier (and funnier-looking) than their hybrid counterparts. Heirloom tomatoes, bursting at the seams.. These eccentric tomatoes have become a sought-after alternative to ...more
Today isn't actually Pi Day, but I was unable to get this article out in time. Pi Day was actually yesterday, March 14th (3.14), so let's call this a post-Pi Day treat! I've usually stuck to computers and security in the past, so I thought I'd toss things up a bit and give yo ...more
New to Microsoft Excel? Looking for a tip? How about a tip so mind-blowingly useful as to qualify as a magic trick? You're in luck. In this MS Excel tutorial from ExcelIsFun, the 22nd installment in their series of digital spreadsheet magic tricks, you'll learn how to use the ...more
Database technology has vastly improved the way we handle vast amounts of data, and almost every modern application utilizes it in one way or another. But the widespread use of databases naturally invites a slew of vulnerabilities and attacks to occur. SQL injection has been a ...more
Deadly natural disasters can happen at any moment— earthquakes, hurricanes, tsunamis, floods, fires and especially tornadoes. That's why you have to be prepared. According to Secrets of Survival: The greatest and most frequent tornado occurrences happen in the United States. ...more
Disengagement report numbers for self-driving car testing in 2016 on public roads in California were just released, and the biggest point we can make about them is that Waymo is very far ahead of their competitors in almost every metric. The California Autonomous Vehicles Tes ...more
Portal is game design milestone. Originally only available bundled in with larger cousins Half-Life 2 and Team Fortress 2 in The Orange Box, its creators, Valve Software, changed what first person gameplay could be. It's been a stand alone product for much of the four years si ...more
In the last decade, the number of people working remotely in the US has increased dramatically, and so has their need for technology and software to supplement that remote work. Whether you work from home or a coworking office space, the requirement for highly compatible and h ...more
Cryptography is the science of keeping secrets, or more specifically, the science of disguising them. As a point of fact, cryptography has progressed quite a bit farther and now encompasses file and message integrity, sender authentication, and pseudo-random number generators. ...more
This video will introduce you to the probabilities and odds of hitting your cards based upon what you have. Excellent beginners manual for what cards to play and the odds of winning with them.
An innovative new wound dressing has been developed by a research team at Lodz University of Technology in Poland that uses crustacean shells to create a bandage that packs an antimicrobial punch — and even more potential to help solve a global problem. Bandages typically hel ...more
In this lesson we will learn how to solve probability problems involving a spinner. A probability measures the likelihood of a certain event. It always ranges between 0 and 1. The following formula can be used to find the probability of a particular event: P(event) = the num ...more
In this Tutorial I will show you how you can use the frequency of letters to decrypt the famous Caesar cipher. I hope it is easy to understand and helpful for getting in touch with basic cryptanalysis. If you find any mistakes or have questions feel free to ask me. Finally I a ...more
Central limit theorum is easily one of the most fundamental and profound concepts in statistics and perhaps in mathematics as a whole. In probability theory, the central limit theorum (CLT) states conditions under which the mean of a suffiently large number of independent rand ...more
As you have no doubt observed, brothers and sisters do not mate. While they may find one another attractive, they find the notion of sex with one another repulsive. This is because a child produced by siblings has a high probability of sharing the same recessive genes, and re ...more
Kazendi, a London-based HoloLens development and rapid prototyping studio, just released a new iOS app in Apple's App Store that lets developers stream HoloLens applications live from the headset to an iPad or iPhone. It's called HoloStream, and is the first iOS/HoloLens cross ...more
Ecosystem changes caused by agricultural choices in Brazil are creating a dangerous microbe mix in exploding populations of vampire bats and feral pigs. Even as human-influenced climate warming is tipping the tables on ecosystems around the world, choices made by landowners i ...more
If you're a developer in the augmented and mixed reality space, there's a high probability that you're intimately familiar with the 3D application and game engine Unity. In May, at VisionSummit 2017, Microsoft announced that 91% of all HoloLens applications have been made with ...more
When watching stories in your Instagram feed, there's a high probability that you'll come across an AR filter that you'll want to try out for yourself. A quick browse and search in the Effect Gallery will bring up nothing in most cases. But all of that unproductive work isn't ...more