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How To: Build confidence intervals & test hypotheses 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 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...

How To: Find confidence intervals without the sigma 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 82nd installment in his "Excel Statistics" series of free video lessons, you'll learn how to construct confidence intervals when the sigma value (the population's standard deviation) in NOT Known using the TINV...

How To: Find mean, median, & mode (averages)

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 34th installment in his "Excel Statistics" series of free video lessons, you'll learn how to use MEAN, MEDIAN, MODE. These measures give us a typical value, a measure of central tendency one value that can repr...

How To: Find outliers using the Z-score method

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 49th installment in his "Excel Statistics" series of free video lessons, you'll learn how to find outliers with the +/- 3 Z-score rule and the ABS function. See how to do a box plot by hand and in Excel. For th...

How To: Use the RANK and PERCENTRANK functions 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 38th installment in his "Excel Statistics" series of free video lessons, you'll learn how to use the RANK and PERCENTRANK functions as well as the Data Analysis add-in's Rank & Percentile tools.

How To: Group quantitative data into classes 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 20th installment in his "Excel Statistics" series of free video lessons, you'll learn how to take raw quantitative (numerical) data and figure out how to group it into classes so that you can have categories an...

How To: Build confidence intervals given the sigma 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 81st installment in his "Excel Statistics" series of free video lessons, you'll learn how to construct confidence intervals when the sigma (population standard deviation) is known. See how the CONFIDENCE and NO...

How To: Work with skew and histograms 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 23rd installment in his "Excel Statistics" series of free video lessons, you'll learn how to work with skew in histograms for quantitative Data. Learn how to skew left (negative) and skew right (positive) with ...

How To: Create a relative frequency distribution 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 14th installment in his "Excel Statistics" series of free video lessons, you'll learn how to create relative & percent & frequency distributions with formulas for categorical data. See, too, how to create a per...

How To: Make calculations in Excel with formulas & references

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 2nd installment in his "Excel Statistics" series of free video lessons, you'll learn how to make calculations in Excel using formulas and cell references. Learn about the different Excel Math operators and func...

How To: Apply accounting & percentage formatting in Excel

This is the fifth video in the Statistics in Excel. He gives the website address where content can be downloaded. He speaks about the different types of formatting like stylistic and number formatting. He talks about the different formats like accounting and percentage, and how to use both of them. Accounting format is nice because it lines up the decimals nicely. He shows how to apply the accounting format. The percentage format displays the value in as a percentage. He shows you how to appl...

How To: Monitor network activity on Windows 7 with Tekzilla

Veronica from Tekzilla teaches you how to monitor network activity on Windows 7. Go to ITSamples and download the Network Activity Indicator program. Install it and run it. This will add a new icon on your system tray. It blinks to reflect incoming and outgoing packets. You can right click to see a more detailed report. You also get statistics and a menu for your network and firewall settings. So to get the popular windows XP type network indicator icon all you need to do is follow the steps ...

How To: Use the percentile formula in Statistics

In this tutorial the instructor explains the percentile formula. He says that the percentile formula is used to find the percentile rank of a data point in a group of data. He takes an example that consists of the lengths of puppies. Now he intends to find out the percentile rank of any puppy in the group. He shows that the formulate to compute a percentile rank of a particular puppy is rank R = 100 * (N< + (1/2)N= )/ Nt, where N< is the number of puppies whose length is less that the length ...

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: Calculate proportions and percentages in Excel

This Excel Statistics series of video shows how to calculate proportions and percentages in Microsoft Excel. This video shows how to do percentage calculations using formulas in Microsoft Excel. To make a formula for a percentage, you need to first make a formula to calculate the total sum of objects you are going to use. To do that, use the sum formula. Now, divide the current object's value with the previously generated sum formula, which gives you the frequency. When you multiply this by 1...

How To: Organize your garage to save space

According to a U.S. survey, the crud in our garages is taking up most available floor space. Hence the average North American chucks up to $6500 worth of mostly useless stuff on the floor of the garage, while the $20,000 vehicle sits outside in the cold, rusting. It's time to get our cars back into garages. We spent more than $688 million dollars last year on garage organization and it barely made a dent. If you don't believe me, walk down your street and count the number of houses with cars ...

Walkthrough The Saboteur: Prologue, M6: A Sunday Drive

Drive your way to success on The Saboteur for the Xbox 360. You need to floor the pedal in order to follow Dierker in the sixth mission in the Prologue: A Sunday Drive. It's payback time. Hop into the car with Jules and follow Dierker. Don't get too close to him or his paranoia meter will rise. If it fills up you will be caught and fail the mission. Likewise, if you loose sight of Dierker for too long you will fail the mission. Follow Dierker, just don't follow him too closely. He will lead y...

How To: How high is your landfill?

Think about how many things you truly throw in the trash, and how many times you empty your trash, only to be taken away by the garbage man and out of your sight. Well, the truth is that its not exactly out of your life. Statistics show that on average each person uses 350 trash bags each year, thats 100 billion all together, and the worst part aboput this fact is that it takes up to 500 years for each of the bags to decay. Thats right in your city at your landfill, bags pileing up, polluting...

How To: Convert percents into fractions

Percents are handy for displaying statistics or labeling objects such as sale items in a store, or ingredient labels. However, in a math equation, a percent is a bit difficult to use. Therefore, you will need to convert your percents into an easier type of number form.

How To: Add LED flashlights to your PS3 controller

Give yourself the hottest PS3 controller out there by modding it and adding some sweet LED flashlights. The LEDs will light up in accordance with your game play for a whole new level of enjoyment. This three part video series will take you through the whole process every step of the way, from disassembling to correctly modding it without destroying your controller.

How To: Build an infrared smart board with a Wiimote

Save tons of money by building your own LED pen that works with a multitouch smart board / whiteboard. You'll also need a WiiMote (Wii Remote) to use in conjunction with your homemade LED pens that you'll be making in this video. To get started with this awesome project, you'll need a 1.5 volt tolerant infrared LED, momentary push button switch, AA-battery case holder, one AA battery, containment unit (Sharpie marker or highlighter body), pliers, superglue, thin copper wire and a soldering iron.