Crucial Variance Search Results

How To: Find the standard error of the mean

In this video the tutor explains about the standard error of the mean. He starts explaining by drawing the diagram of a distribution and now he takes ten samples from the distribution and starts plotting them. He says that in theory if we do it infinite times then we can obtain the sampling distribution of the sampling mean. For the example he takes the number of samples as 10. Now depending on these values of n we can get different sampling distributions. Now he intends to find the mean of t...

How To: Measure dispersion with range, variance & std dev

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 study for that next big test). With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to use statistical range, variance and standard deviation to measure dispersion in a data set.

How To: Find the variance of differences of random variables 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, 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, we learn how to calculate the variance of differences of random variables.

How To: Calculate mean and variance for a Bernoulli distribution

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 study for that next big test). With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to calculate mean and variance for a Bernouilli distribution.

How To: Calculate mean & variance when given a Bernoulli distribution 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, thanks to the Internet, it's easier than ever to follow in their footsteps (or just study for that next big test). With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to calculate the mean and variance of a Bernouilli distribution.

How To: Calculate variance and standard deviation using Excel

This video shows the method to find the variance and standard deviation using Excel. The variance shows the variability of the data points from the median. We find the difference of the median and the mean. We write the formula using '=' sign. The median and data points are put in it by selecting the appropriate cell. The median is made an absolute constant by pressing the F4 key. This is squared by using '^2'. This is multiplied to the frequency using '*'. The result is found for all the dat...

How To: Find deviations and variance for a population in Excel

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 41st installment in his "Excel Statistics" series of free video lessons, you'll learn how to calculate deviations, variance and standard deviation for a sample and a population using Excel tables and the VAR, S...

How To: Paint with pixels in Zbrush

This 3D modeling software tutorial explains how to paint with pixels on a model in Zbrush. When you paint with pixels what you do is get variance on your surface and use that as an illustration to keep a viewers interest. Learn how to paint with pixels in Zbrush and create pattern variations in sculpture images.

How To: Use AGGREGATE instead of SUBTOTAL in MS Excel 2010

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 664th installment in their series of digital spreadsheet magic tricks, you'll learn how about how the new Excel 2010 AGGREGATE function that can calculate these 19 different functions depending on what number you put into the 1st argument of the AGGREGATE function. This is an improvement over the SUBTOTAL function wh...

How To: Ace your driving test

Driving is crucial to survival, but it's also a privilege, not a right. Contained in this video are the crucial steps that you'll need to take to ace that driving test with flying colors and get that license. Practice makes perfect!

How To: Pick a reel for a fishing rod

Picking the right reel is as important as being a skilled fisherman. In this tutorial, learn exactly how to choose the proper reel for your fishing rod. By following these tips, you will definitely improve your ability and skill. So, when picking a reel for a fishing rod, it's important to consider what kind of fish you are trying to catch. In this video you will learn about the variance in prices among fishing rods and reels with help from a fishing trainer.

How To: Make a quick and easy wallpaper in Adobe Photoshop CS4

Adobe Photoshop CS4 lets you create images and graphics that represent your personality. This video tutorial demonstrates how to make a quick, cool, and easy wallpaper design for your personal computer desktop. Either copy the provided example, or make your own tweaks and come up with a cool custom design.

How To: Understand the central limit theorem

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 random large variables (each with finite means and variance) will be normally distributed, approximately. Huh? If you are having trouble understanding central limit theorum and need help trying to solve it, check out this tu...

How To: Master the basics of Adobe Actionscript 3

Scripting languages, like coding languages, are among the most complicated and daunting aspects of computer use to master. If you can do it, however, they allow you to do nearly anything you want with a computer. This video will introduce you to the popular scripting language Actionscript 3. This language is crucial to using Flash successfully to create games, movies, and websites, so get this stuff down and then go watch our other Actionscript tutorials!

How To: Print images in Aperture

Instead of using Photoshop, why not give Apple's Aperture a try? Aperture is designed more for post-production work for professional photographers, letting you cull through shoots, enhance images, manage massive libraries, and deliver stunning photos.

How To: Use feeders and ledger weights to catch more fish

Ledgers and feeders are important parts of bait preparation, and thus crucial to successful fishing as a whole. This video features a professional fisherman explaining how to use these two tools to bait your pole properly, maximizing your baits performance, your fish catches, and the amount of fun and relaxation that you and your friends can derive from a day spent fishing.

How To: Create a vector using a render in Photoshop

This awesome simple Adobe Photoshop vector tutorial teaches how to create a vector using a render. This tutorial also has some great tips for beginners to achieve some great results. Vector graphics is a crucial tool of the professional graphics world, so if you don't know how to work with vectors, or need more practice, check out this Photoshop tutorial and learn how to create vectors from renders.

How To: Perform emergency CPR and first aid on a pet dog

Dogs can choke or find themselves in emergency situations and require urgent medical assistance. While a veterinary aid is still mandatory, these CPR and first aid measures can be life-saving in a crucial moment. Watch this video tutorial and learn how to save a pet dog's, or cat's, life by CPR and first aid medical techniques.

How To: Tie a one-handed bowline knot quickly

When climbing one of the most crucial knots to have in your arsenal is the Bowline Knot. But sometimes you may find yourself in a situation that requires you to tie one quickly. In this video you'll learn how to tie one quickly withn one hand so that way you can really leave yourself hanging!

How To: Shift the gears on a road bike

The gears on your bike are crucial tools for allowing you to traverse multiple different types of inclines on the same ride. They allow you to make your pedals easier or harder to push, maximizing power and speed throughout your ride. This video will explain how the gears work and show to shift properly to ensure that you have the best ride you can.

How To: Tie a 100% knot for attaching a fishing lure to a line

Fishing is one of the many outdoor activities where tying different types of knots is crucial, and where debates over which knots are superior are common. This video features a former bass guide demonstrating how to tie his favorite fishing knot, a 100% knot. It is very simple to tie and very effective at holding your lure. Practice it, and you should be able to save yourself time and irritation out on the lake.

How To: Choose your golf course snacks properly

Golf is not considered the most nutrition-oriented sport, but maintaining your energy and hydration on the course are crucial to remaining focused and shooting a low score. This video features a nutritionist describing some snack and drinks that are ideal for the golf course, as well as offering tips for when to eat during your 18-hole game.

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