Calculate Mean

How To : Calculate a trimmed mean in Microsoft 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 Excel ...more

How To : Calculate geometric average in Excel with GEOMEAN

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 Excel ...more

How To : Calculate Faster Than a Calculator

When you need to crunch numbers quickly — and I mean really quickly — there's a cool method you can use to multiply two numbers together in just a few seconds. This is great when you need to speed through multiplication homework, and is also good for impressing your math teac ...more

How To : Calculate molecular formula using molar mass

The man was requested to solve a short, basic chemistry exercise. He starts by explaining the meaning of the terms involved in the problem: molecular mass, empirical formula and molecular formula. He also explains the way the are connected, for a better understanding of the wa ...more

How To : Master Newton's second law of motion with NASA

The second law of motion. Force equals mass times acceleration. F=MA. Learn the facts about Newton's second law of motion from the National Aeronautics and Space Administration, otherwise known as NASA. The United States government's most infamous agencyand the powerhouse of s ...more

How To : Use non-transitive dice to cheat your friends

Need a new prank or trick to play on your friends? Well this video is your solution. All you need a non-transitive dice and to follow this video and you will be cheating your friend in no time. The idea behind this video is to use dice that are non standard, which means instea ...more

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 ...more

How To : Weigh samples in the lab using a balance

The Interactive Lab Primer (ILP) has been developed as part of the Royal Society of Chemistry Teacher Fellowship Scheme, one of the themes of the Chemistry for Our Future program, and initiative which aims to secure a strong and sustainable future for the chemical sciences in ...more

How To : Build a RanDome Geodesic Emergency Shelter

This method is easy, intuitive and requires very little math. You will need: Any flat flexible sheet material (ex. paper plates for this how-to) Pencil or pen Scissors Stapler, tape, glue or fasteners Ruler or straight edge Protractor Flatten Plates Flatten the paper plate ...more

How to Get Better at Halo : Reach

Introduction Halo: Reach is Bungie's latest and final addition to the franchise. Microsoft has claimed the title and from now on 343 Industries will be working on the Halo franchise. In my opinion, Bungie's last game is the best out of all of them. These are some tactics and ...more

How To : Calculate standard deviation

Looking to find the standard deviation of your set of values? Standard deviation quantifies how diverse the values of your data set are, and is useful in determining how different your numbers are from each other. You Will Need: • Data • A calculator Step 1: Collect your d ...more

How To : Interpret a standard deviation

A rough definition of standard deviation is that it is a measure of expressing the observed variations about the average in statistical data i.e. by how much do the observed values vary from the mean. This video continues from the previous solved example and demonstrates the m ...more

How To : Convert percents to decimals in math

There will be a time when the need to know how to convert a percent to a decimal will arise. Maybe it will be when trying to calculate a percentage discount on an item to be purchased. The item is 30% off, but what does that mean? How do you calculate the discount if the origi ...more

How To : Find the mean and standard deviation

Mean and standard (or normal) deviation may be hard to understand at first, but with the help of this handy little guide from the pros at Exam Solutions you will be up to speed in no time. In this video, you are shown how to calculate the mean and standard deviation from a no ...more

How To : Find the slope of a line

Learn how to find the slope of a line in this math tutorial. Whether you're doing your math homework or trying to figure out how steep a mountain is, the slope of a line is simple to calculate and has many practical uses. You Will Need: • Graph paper • Pencil • Basic math ski ...more

How To : Change percents into fractions

Fractions are numbers written in the form a/b, where a, b are integers. Fractions can also be expressed in the form of percents by multiplying the value of the fraction with hundred. So we can always change percents to fractions and also fractions to percents. Remember that pe ...more

How To : Use a mean and scatter plot for Statistics

Wondering how to use a mean and scatter plot for statistics? Just follow the few simple steps as below. First step: calculate the scatter plot points on a graph. Second step: make sure to check that mapping the points is perfect. Third step: For example, take a point where ...more

How To : Calculate and solve for density

Density is a means of representing how much mass is contained in the body of an object. The basic formula is: Density (D) = Mass (M) / Volume (V) so D=M/V. Density is important to know for buoyancy and to understand how heavy an object is. This video will show you three exampl ...more

How To : Do normal probability calculations on a calculator

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

How To : Find the volue and surface area of a cylinder

This video both shows the viewer how to calculate the volume and surface area of a cylinder. It also explains what these different numbers mean. The volume is the amount of ‘matter’ that the cylinder can hold. The surface area is literally the area of the cylinders curved face ...more

How To : Evaluate successive percentage changes

The concept of percentages may be a bit difficult to grasp for some beginner level learners. This video attempts to explain the concept of percentages in an easy to understand way. The concept of percentages is explained by using 10 percentage as a base - which of course has ...more

How To : Calculate friction in a body without acceleration

This video shows the viewer how to calculate friction in a body that it is not accelerating. The simple answer is that the force of friction will be equal to the force needed to maintain the constant speed. This means that is you pull a wooden block along a carpet at a constan ...more

How To : Fertilize bermuda grass lawns

Watch Southwest Lawn and Garden's John white and Dr. Bernd Leinauer Discuss the importance of Bermuda grass lawn fertilization and the correct techniques involved. You'll learn how to interpret the meaning behind the fertilizer label, and why a complete fertilizer, including n ...more

How To : Use differential equations to solve for velocity

The guy first gives the definition of differential equations. He explains that a differential equation is an equation that contains the derivatives of an unknown function. He then gives some examples of differential equation and explains what the equation's order means. After ...more

How To : Find the parallel line to a given equation

This videos explains how one can easily find the parallel line to a given mathematical equation. He starts by explaining what it means for two lines to be parallel mathematically speaking. Defining two lines, then comparing the slope of both lines you can mathematically determ ...more

How To : Find the Slope Given 2 Ordered Pairs

Slope is the change in Y over the change in X. Written out, the formula looks is as follows: (y2-y1) ——— (x2-x1) It's a simple formula that just requires you to input your coordinates to calculate the value of the slope. Values are generally notated as such: (x1,y1), (x2,y2 ...more

How To : Calculate your GPA step by step

Ever wanted to know what your GPA score is? Your GPA is your grade point average, which is a measure of a students achievement in college. This means all your grades are averaged and your are given a cumulative "GPA". Most colleges and universities will figure up your scores f ...more

How To : Calculate the area of a circle given the radius

This video is about how-to calculate the area of a circle. It is in a very simple, and in an elementary school point of view. Of course, it can be done with either metric or imperial measures, as explained in the video. Only thing is that, it truly explains the simplicity of t ...more

How To : Be a human calculator

Before we had the calculator and before we had the abacus we had the human brain to complete our math problems for us. Remember that? Well, it seems that few of us do, resorting to calculators on our phone for elementary subtraction problems and multiplication. Strengthen you ...more

Scrabble Bingo of the Day : ISOPLETH

ISOPLETH 63 points (13 points without the bingo) Definition: a type of isogram [n] Okay... in order to know what an isopleth is, you first have to know what an isogram is... An isogram (or isoline) is a contour line on a map connecting points of equal value. In other words, ...more

News : Google+ Makes Blocking People Even Easier

+Eric Cattell, the Social Graph Technical Lead of Google+, announced a lot of improvements and added features this morning, most of them having to do with circle management and blocking people. Invite People More Easily You can now invite people with just a single link, in a ...more

How To : Find the Percent Given Two Numbers

Whether you're shopping for deals, need help with a little math, or any number of other occasions, it's a valuable skill to know how to quickly figure out a percentage given two numbers. Let's say you're shopping and you come across a pair of shoes that are normally $45, but ...more

How To : Do a similarity transformation in Geometry

In this video the author shows how to do similarity transformations. He says that similarity transformations are used to draw the similar images at a different location and the k value is most important while doing this kind of transformation. He says that a negative k value t ...more

How To : Avoid credit card debt

Living within your means can be done. You don't want to be a slave to the credit card company, do you? Learn what to do to stay out of credit card debt. This how to video will give you the tips. Credit card debt is a slippery slope. You Will Need * Budget * Debit card * Willp ...more

Hack Your Brain : Improving Memory with Dirty Pictures

If you're interested in nabbing superhero memory strength, the secret behind training your brain is not necessarily what you might expect. Your standard G-rated brain strengthening exercises range from crossword puzzles to Sudoku to calculating fairly simple math problems to i ...more

News : OMG. Surf then touch a Bigass Whale at Westwards

This one smells like a fish story.  It is not.  Tuesday April 13, Dave and I got up to surf westward at 7 in the morning.  First rate waves.  Headache cold water....sun blocked by the cliffs.  Fast, clean, beach break.  3-4 foot sets, mostly lefts.  About 15 dolphins swam by.  ...more

How To : Make Crop Circles or Are Aliens Among Us?

Does this video prove that otherworldly intelligent life has visited Earth? No. It does not prove anything other than there are designs ‘etched’ onto the surface of a field. Does the video immediately above prove that otherworldly intelligent life hasn’t visited Earth? Yeah, y ...more

How To : Play The Game "Killer" With Playing Cards

Briefing Playing cards are used to play Killer but Killer is not exactly a card game. You cannot play this game if you do not know how to wink. I do not recommend that you go about winking at men and women to practice for this game. A minimum of 4 players are required to pla ...more

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