Population Density Search Results

How To: Build war game terrain with foam

Watch this instructional model making video to begin making war game terrain out of foam. This video introduces different types of foam and the varying strengths of high density foam. It's also possible to cast plaster molds with foam. Use foam as the basic structure for war games terrains, model railroads, architectural models and miniature dioramas.

How To: Use NORMSINV with critical values 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 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.

How To: Solve population proportion problems 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. With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to solve pop. proportion problems in stats.

How To: Use the NORMSINV & NORMSDIST 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 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.

How To: Construct confidence intervals with TINV in MS 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 83rd installment in his "Excel Statistics" series of free video lessons, you'll learn how to construct confidence intervals when the sigma (population standard deviation) in NOT known using the TINV function.

How To: Stack liquids experiment at home

In this how-to video, you will learn how to stack liquids at home. This will make for a great experiment. You will need a tall, transparent container, molasses or honey, liquid soap, water, vegetable oil, and rubbing alcohol. You might want food coloring and items to float in the container. First, add the molasses to the container. Next, add the dish soap and water. You can add food coloring to this. Make sure to pour it on the side of the container. Add the vegetable oil on top of the water....

How To: Make a Stack of Different Colored Liquids

Here's a simple home science experiment to demonstrate to kids the different weight and viscosity of various liquids. The liquids near the bottom are more dense while the liquids on top are less dense. This can also be used to determine the relative density of solid objects. Place them in the container and see where they float.

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: Make a homemade cat trap

Needing to trip the feral cat population in your neighborhood. Well, it's time to make a trap, fill it with cats, and shut your trap. This good how to shows a trap you can build yourself, and the necessary tequinique to catch those cats.

How To: Create a line-graph in Excel 2007

In excel a left click is made on box A1 and the X title is typed in as year. In A2 the year 2001 is typed and in A3 the year 2002. Both A2 and 3 boxes are highlighted and the bottom right hand corner is used to drag the work into a copied sequence down to A12. In B1 "population in billions" is typed. From the web site the data is copied and typed in as it appeared and the numbers are rounded off. A click is made on the "insert" tab and line is selected from the menu which appears. The upper l...

How To: Diagnose and treat warts

At any given time, about 10% of the UK population have warts, which costs the NHS a staggering £40m a year in treatment. In this exclusive guide, Dr McKenna discusses the various types of wart – from the common wart to the genital wart – and advises on both preventative measures and treatment options available, to ensure that these little blighters will blight you no more. This video tutorial shows how to diagnose and treat warts.

How To: Model a human hand in Blender 3D

This Blender 2.5 video tutorial offers a demonstration and overview of clean hand topology. The tutorial includes tips on how to structure your mesh, including clean topology, mesh flow and edgeloop density. Whether you're new to the Blender Foundation's popular open-source 3D computer graphics application or are a seasoned digital artist merely on the lookout for new tips and tricks, you're sure to be well served by this free video software tutorial from the folks at CG Cookie. For more info...

How To: Control edge flows in Blender

When working with a high density mesh in Blender, maintainig a firm grip on topology is essential. This quick video demonstrates a few tips for increasing/decreasing your topology in a given area and for redirecting the flow of your topology. Whether you're new to the Blender Foundation's popular open-source 3D computer graphics application or are a seasoned digital artist merely on the lookout for new tips and tricks, you're sure to be well served by this free video software tutorial from th...

How To: Hand color using layer masks in Photoshop CS3 and CS4

Nichole Young demonstrates how to hand color using layer masks in Photoshop CS4, which also works in Photoshop CS3. The procedure can be summarized in two stages: turning the picture you would like to edit black and white and then bringing color back into it to give it a hand-colored look. The black-and-white effect is achieved by creating a new layer over the background layer. The next step is to give the picture a warm look by adjusting the layer’s respective color balance. Then bring the c...

How To: Use gain and neutral density on a video camera

A common problem when shooting in low-light situations is that even if you open your lens to its lowest f-stop number, you're left with an image that's far too dark. One obvious remedy is to add more light. But what if you don't have more lights available to you? That's where the gain increase switch comes in. This free video cinematographer's guide will show you how to use digital gain settings to amplify available light to get better shots in less-than-ideal environments.

How To: Build a real lava lamp

This is how to make a near professional grade lava lamp. We did this as a chemistry project. We perfected it in a week. This took many hours to do, as we had to get the density just right. We remade it three times, also. At the very end, we combined all of the wax into a huge flask. And then it blew up.

How To: Do basic lighting corrections in Photoshop

In this video tutorial the instructor shows how to perform basic lighting corrections in Adobe Photoshop. The levels tool is the Photoshop's most used command which has many features to it. Its most basic function is as a lighting correction tool. In this video open an image and work on its adjustment layer so that you do not damage the original picture. Now choose the levels option by right clicking and it shows a pop up window which contains a histogram which shows the population of the col...

How To: Identify characteristics of a sample during a survey

To identify characteristics of a sample in your survey, there are many factors to consider of your samples. The first four characteristics you need to focus on are gender, age, income level, and education level. All four of these characteristics must be proportional to that of the population. You also need to consider the geographic location. Only take samples from the immediate geographical area. Finally, an important characteristic of the survey is the sample size. You do not want to ask to...