Perfect Error Puzzle
Contents |
Example: I estimated 260 people, but 325 came. 260 − 325 = −65, ignore the "−" sign, so my error is 65 "Percentage Error": show the error as a percent of the exact value ... so divide by the exact value and make it a percentage: 65/325 = 0.2 = 20% percent error formula Percentage Error is all about comparing a guess or estimate to an exact value. See percentage change,
Percent Error Calculator
difference and error for other options. How to Calculate Here is the way to calculate a percentage error: Step 1: Calculate the error (subtract one value form percent error chemistry the other) ignore any minus sign. Step 2: Divide the error by the exact value (we get a decimal number) Step 3: Convert that to a percentage (by multiplying by 100 and adding a "%" sign) As A Formula This is the formula
Can Percent Error Be Negative
for "Percentage Error": |Approximate Value − Exact Value| × 100% |Exact Value| (The "|" symbols mean absolute value, so negatives become positive) Example: I thought 70 people would turn up to the concert, but in fact 80 did! |70 − 80| |80| × 100% = 10 80 × 100% = 12.5% I was in error by 12.5% Example: The report said the carpark held 240 cars, but we counted only 200 parking spaces. |240 − 200| |200| × 100% = 40 200 × 100% negative percent error = 20% The report had a 20% error. We can also use a theoretical value (when it is well known) instead of an exact value. Example: Sam does an experiment to find how long it takes an apple to drop 2 meters. The theoreticalvalue (using physics formulas)is 0.64 seconds. But Sam measures 0.62 seconds, which is an approximate value. |0.62 − 0.64| |0.64| × 100% = 0.02 0.64 × 100% = 3% (to nearest 1%) So Sam was only 3% off. Without "Absolute Value" We can also use the formula without "Absolute Value". This can give a positive or negative result, which may be useful to know. Approximate Value − Exact Value × 100% Exact Value Example: They forecast 20 mm of rain, but we really got 25 mm. 20 − 25 25 × 100% = −5 25 × 100% = −20% They were in error by −20% (their estimate was too low) InMeasurementMeasuring instruments are not exact! And we can use Percentage Error to estimate the possible error when measuring. Example: You measure the plant to be 80 cm high (to the nearest cm) This means you could be up to 0.5 cm wrong (the plant could be between 79.5 and 80.5 cm high) So your percentage error is: 0.5 80 × 100% = 0.625% (We don't know the exact value, so we divided by the measured value instead.) Find out more at Errors in Measurement. Percentage Difference Percentage Index Search :: Index :: About :: Contact :: Contrib
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Percent Error Definition
Rants and Accomplishments > Connection Error Discussion in 'Rants and Accomplishments' started by domon, Oct 14, 2015.
Percent Error Worksheet
Oct 14, 2015 #1 domon Well-Known Member Messages: 1,454 Likes Received: 255 Joined: Dec 1, 2014 Anyone else getting this over and over? I have what is a good percent error perfect signal - also tried wifi. No luck. I'm missing my coin dungeon 1 hour domon, Oct 14, 2015 domon, Oct 14, 2015 #1 Oct 14, 2015 #2 grinder Well-Known Member Messages: 1,326 Likes Received: 185 Joined: Oct 4, 2013 https://www.mathsisfun.com/numbers/percentage-error.html User ID: [US] 375 256 244 PADherder: link It's down for iOS. grinder, Oct 14, 2015 grinder, Oct 14, 2015 #2 Oct 14, 2015 #3 domon Well-Known Member Messages: 1,454 Likes Received: 255 Joined: Dec 1, 2014 grinder said: ↑ It's down for iOS.Click to expand... grinder said: ↑ It's down for iOS.Click to expand... Was this announced or some problem? I spent 1M coins for an alt dungeon domon, Oct 14, 2015 domon, Oct 14, 2015 #3 Oct 14, http://puzzleanddragonsforum.com/threads/connection-error.82778/ 2015 #4 grinder Well-Known Member Messages: 1,326 Likes Received: 185 Joined: Oct 4, 2013 User ID: [US] 375 256 244 PADherder: link I don't think it's planned. I was trying to run some dungeons and asked the same thing. grinder, Oct 14, 2015 grinder, Oct 14, 2015 #4 Oct 14, 2015 #5 domon Well-Known Member Messages: 1,454 Likes Received: 255 Joined: Dec 1, 2014 grinder said: ↑ I don't think it's planned. I was trying to run some dungeons and asked the same thing.Click to expand... Well this is absolute Bs. Maintenance wasn't supposed to start for another 4 hourS domon, Oct 14, 2015 domon, Oct 14, 2015 #5 Oct 14, 2015 #6 _*mcn*_ Member Messages: 92 Likes Received: 30 Joined: Jan 24, 2014 But, but; I'm only supposed to come troll the forums when I'm out of stamina. *sigh* Give me my free game time back! _*mcn*_, Oct 14, 2015 _*mcn*_, Oct 14, 2015 #6 Oct 14, 2015 #7 Supp Extreme Topaz Slime, Shynee Messages: 1,999 Likes Received: 576 Joined: Nov 1, 2013 Yup I'm hitting it too. Need to farm rush for blue orbs.... Supp, Oct 14, 2015 Supp, Oct 14, 2015 #7 Oct 14, 2015 #8 Rizu Cynical Bastard Party Messages: 1,250 Likes Received: 501 Joined: May 21, 2015 User ID: 336550382 PADherder: link Meeeeehhhhh....Thankfully I already blew my stamina an hour or so ago on my main, but I had been all geared up to run the
blue in a 5×2 grid and the red in an 8×3 grid. The missing square puzzle is an optical illusion used in mathematics classes to help students reason https://en.wikipedia.org/wiki/Missing_square_puzzle about geometrical figures; or rather to teach them not to reason using figures, but to use only textual descriptions and the axioms of geometry. It depicts two arrangements made of http://www.dailymail.co.uk/femail/article-3612328/Maths-quiz-twist-latest-puzzle-leave-internet-baffled-spot-error.html similar shapes in slightly different configurations. Each apparently forms a 13×5 right-angled triangle, but one has a 1×1 hole in it. Contents 1 Solution 1.1 Principle 2 Similar puzzles 3 See percent error also 4 References 5 External links Solution[edit] What the "magician presentation" does not show. The angles of the hypotenuses aren't the same: they are not similar triangles. Splitting the thin parallelogram area (yellow) into little parts, and building a single unit square with them. The key to the puzzle is the fact that neither of the 13×5 "triangles" is truly a triangle, perfect error puzzle because what appears to be the hypotenuse is bent. In other words, the "hypotenuse" does not maintain a consistent slope, even though it may appear that way to the human eye. A true 13×5 triangle cannot be created from the given component parts. The four figures (the yellow, red, blue and green shapes) total 32 units of area. The apparent triangles formed from the figures are 13 units wide and 5 units tall, so it appears that the area should be S = 13 × 5 2 = 32.5 {\displaystyle \textstyle {S={\frac {13\times 5}{2}}=32.5}} units. However, the blue triangle has a ratio of 5:2 (=2.5), while the red triangle has the ratio 8:3 (≈2.667), so the apparent combined hypotenuse in each figure is actually bent. With the bent hypotenuse, the first figure actually occupies a combined 32 units, while the second figure occupies 33, including the "missing" square. The amount of bending is approximately 1/28th of a unit (1.245364267°), which is difficult to see on the diagram of the puzzle, and was illustrated as a graphic. Note the grid point where the
ARTICLESHomeTopShare show ad Maths quiz with a twist is the latest puzzle to leave the internet baffled - so can YOU spot the error?Confused internet users have tried to solve this puzzling brainteaserMany look to complicated maths but the real answer was far simpler It's the latest in a series of puzzles frustrating the internetBy Emily Hodgkin For Mailonline Published: 09:35 GMT, 27 May 2016 | Updated: 13:40 GMT, 30 May 2016 e-mail 5.9k shares 1.1k View comments Forget pandas or gherkins, yet another puzzle is sweeping the internet, this time boggling the minds of everybody with its deceptively simple answer.Many have been trying to solve the riddle with advanced mathematics, but were probably left kicking themselves when they realised the real solution. Antley Lamont Staten posted this brainteaser on Facebook and it's been shared more than 370,000 times and elicited more than 58,000 comments and reactions.Scroll down for video Yet another puzzle is sweeping the internet, this time boggling the minds of everybody with its deceptively simple answer, aboveThe puzzle shows a grid of nine numbers and a sign next to it asking people to share the image when they find the error.Lots of people have been trying but failing to solve what they think is a mathematical equation on the right side. RELATED ARTICLES Previous 1 Next Picture of Jimmy Carr meeting the Queen sets off an epic... 'Turns out they'd given me a staph infection': Woman shares... 'Before battle I would read Dostoevsky': Ex-Marine who... Are the Duchess of Cambridge's state-of-the art Adidas... Share this article Share 5.9k shares One wrote: 'It' s 4 and 5. 3 + 6=9 2+5=7 not 8 and 1+4=5 not 7. That's how I looked at it.'However, the answer is that 'mitsake' is spelled wrong.Theodore O'Connell II wrote: 'This is funny. Most people will pay more attention to the numbers and not the spelling of the sign.'Pat Ireland said: 'Just shows that it's true - most of us only see the first and last letter of a word.' Many have been trying to solve the riddle with advanced mathematics, but were probably left kicking themselves when they realised the