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How To: Use the SUMPRODUCT function in Microsoft Excel

Are you looking for a way to make your Microsoft Excel formulas more efficient? If so, you're in the right place. With this free video lesson from everyone's favorite digital spreadsheet guru, YouTube's ExcelsFun, the very first installment in his "Excel Formula Efficiency" series, you'll learn about the basics of Excel's SUMPRODUCT function — why some people use double negative and why other use times one.

How To: Calculate azimuth in trigonometry

Azimuth is simply the angle of an object in the sky along the horizon. Yes, it's spherical trigonometry but it's not difficult! Check out this video and in just a few minutes you will be able to solve azimuth problems on your own.

How To: Fold an origami crane with the DaVinci robot

Learn how to origami a crane with this demonstration by a Japanese surgeon. Watch as he makes origami with the DaVinci robot, a surgical tool powered by state-of-the-art robotic technology. The surgeon’s hand movements are scaled, filtered and seamlessly translated into precise movements of the EndoWrist Instruments. Making origami will never be more interesting. Check out the size of the origami paper crane!! Amazing!

How To: Calculate the probability of two dependent events

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 person selects 1 pen and 1 marker. That is 6 items total. First she count the all items that involved in this problem. Then count the individual probability of the pen and marker. The person selects 3 pens out of 6 item...

How To: Find your happy weight

Losing weight can be a battle, but why not be realistic about your goals rather than kill yourself striving for a size 0? A happier alternative to the cycle of weight loss and gain is to achieve a weight you and your doctor can both live with. In this tutorial, learn how to calculate your BMI and ways to figure what your "happy weight" is.

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.

How To: Calculate GPA

If you fear you're off to summer school, ease the stress of uncertainty with some simple math and know when to seek help with your grades.

How To: Add dynamics to concave objects in Cinema 4D

In this tutorial, create concave objects in Cinema 4D such that particle objects behave and interact realistically with the concave object. The automatic setting for objects is configured in a way that simplifies calculation and speeds up rendering time. By changing the automatic setting within Cinema 4D, the physical properties of concave and curved objects are calculated more thoroughly and are rendered more realistically.

How To: Understand aperture values in photography

If you're just getting started in photography or if you're looking to learn a little bit more about your camera, then you may have run into the term "Aperture" or "Aperture Values", or those weird number numbers. Aperture is in the lens of your camera and determines how much light enters into the lens itself and helps to determine your focal length. In this video you will get a small lesson on what Aperture is, and how to calculate focal length and aperture values.

How To: Find the slope of a line in mathematics

Need to know how to calculate the slope of a line? This free video algebra lesson will teach you everything you'll need to know. 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 big test).

How To: Build a simple compound interest program in Java

Want to program your own Java games and applications but don't know beans about object-oriented programming? Never you fear. This free video tutorial from TheNewBostonian will have you coding your own Java apps in no time flat. Specifically, this lesson discusses how to write a simple application to calculate compound interest. For more information, including detailed, step-by-step instructions, watch this helpful programmer's guide.

How To: Use the CONFIDENCE.T function in Microsoft Excel 2010

New to Microsoft Excel 2010? Looking for a few good tips and tricks? Look no further. In this free video tutorial from everyone's favorite MS Excel guru, YouTube's ExcelIsFun, the 7th installment in his series of Excel 2010 video tutorials, you'll learn how to use Excel's new CONFIDENCE.T function to calculate the margin of error for a T distribution confidence interval.

How To: Calculate bonuses based on years worked in MS Excel

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 601st installment in their series of digital spreadsheet magic tricks, you'll learn how to use the VLOOKUP & IF functions to make bonus calculations based on the number of years worked.

How To: Teach students a song to calculate irregular density

If your students are having trouble with density, check out this tutorial. In this entertaining video, teacher Mr. Edmonds goes through all the steps to find the density of an irregular solid object to the tune of "Afternoon Delight". This song should help your kids remember how to solve these problems quicker and easier.. just don't be surprised if you get this catchy tune stuck in your head!

How To: Calculate future value for an annuity in MS Excel

As you might guess, one of the domains in which Microsoft Excel really excels is business math. Brush up on the stuff for your next or current job with this how-to. In this tutorial from everyone's favorite digital spreadsheet guru, YouTube's ExcelIsFun, the 60th installment in his "Excel Business Math" series of free video lessons, you'll learn how to use the Excel functions FV and PMT to make a future value calculation for an annuity.

How To: Calculate present value for an annuity in MS Excel

As you might guess, one of the domains in which Microsoft Excel really excels is business math. Brush up on the stuff for your next or current job with this how-to. In this tutorial from everyone's favorite digital spreadsheet guru, YouTube's ExcelIsFun, the 61st installment in his "Excel Business Math" series of free video lessons, you'll learn how to use the Excel functions PV and PMT to make a present value calculation for an annuity.

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 ExcelsFun, the 35.2nd installment in his "Excel Statistics" series of free video lessons, you'll learn how to use Excel's GEOMEAN function to find geometric mean.

How To: Find range and interquartile range 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 40th installment in his "Excel Statistics" series of free video lessons, you'll learn how to calculate range & interquartile range for variability using the MAX, MIN, QUARTILE functions.

How To: Find the sample size for confidence intervals 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 87th installment in his "Excel Statistics" series of free video lessons, you'll learn how to calculate sample size (n) for confidence intervals.

How To: Do time calculations with Microsoft Excel's MOD

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 286th installment in their series of digital spreadsheet magic tricks, you'll learn how to calculate hours worked for a night shift where workers start at 9 PM and end at 5 AM.

How To: Use Microsoft Excel's undocumented DATEDIF function

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 151st installment in their series of digital spreadsheet magic tricks, you'll learn how to calculate the days, months or years between two dates using Excel's undocumented DATEDIF function.

How To: Maintain car tires and ensure maximum tire life

This video shows you how to perform tire maintenance on your vehicle. In order to check the tread wear on your tires, you will need a penny. You will have to check the entire tire for wear, because tires may wear away unequally. Just slip the penny between the tread. If you are still able to see Lincoln’s entire head, then you will need to replace your tire(s).

How To: Fold an origami Christmas tree ornament

Origami is simple and fun and our host proves that right off by displaying how little we actually need material wise, to make something unique and pretty. Just two swathes of patterned paper, put flush together and a paper clip. First folding your little construction into the shape of a tiny kite It gets very precise from there. Incorporating smaller and smaller folds, but with a close-up view and a step by step explanation, this video will ensure success. After creating your unique abstract ...

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 mathematical interpretation of the standard deviation that was calculated. We begin with stating the mean and standard deviation values and then calculating the upper and lower bounds of the data based on the standard dev...

How To: Calculate your GPA

In order to calculate your cumulative average (GPA), you need to know the value of the grades you receive. The grades you receive in your classes are based on the grading scale of each instructor in your classes. Your cumulative average is the resulting value of all of the grades.

How To: Calculate price per unit with basic arithmetic

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 unpack and solve word problems that require you to find price per unit.

How To: Calculate salary based on work experience in MS Excel

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 629th installment in their series of digital spreadsheet magic tricks, you'll learn how to use the VLOOKUP, MATCH, DATEDIF, SUMIF, SUMPRODUCT and INT functions to look up salary based the number of relevant years worked.

How To: Figure out the domain & range of a piecewise function

Need to calculate the domain and range of a graphed piecewise function? Learn how with this free video lesson. 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 big test).

How To: Find the slant asymptote of a rational function

Need help figuring out how to calculate the slant asymptote of a rational function? Learn how with this free video lesson. 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 big test).

How To: Work with Microsoft Excel's order of precedence

Whether you're interested in learning Microsoft Excel from the bottom up or just looking to pick up a few tips and tricks, you've come to the right place. In this tutorial from everyone's favorite digital spreadsheet guru, ExcelIsFun, the 24th installment in his "Highline Excel Class" series of free video Excel lessons, you'll learn see exactly how Excel calculates/evaluates formulas including things like intersections, unions, negation, text operators and comparative operators. Knowing the o...

How To: Calculate percentiles and quartiles in Microsoft Excel

f 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 37th installment in his "Excel Statistics" series of free video lessons, you'll learn how to use the PERCENTILE and QUARTILE functions.