thnx A lot for sharing the video. it helped me a lot tomorrow i m having exams. i was bad in solving uncertainty but now i can solve every problem of uncertainty. God Bless You.
@ahmednickleen12803 жыл бұрын
@Nathanael Donald Don't fall for this, It's a scam
@goonersgang99373 жыл бұрын
Thank u my guy 🥺🥺🥺 am doing A level and I couldn’t understand how my teacher explained uncertainties,but thanks to you i know how to do them now.Love from Birmingham 🇬🇧
@CaptainNinjaKid7 жыл бұрын
Never realized how widespread IB is
@Ben.N3 жыл бұрын
Yeah Columbine does IB as well
@merkins872 жыл бұрын
you sir, just saved my bacon: I've been struggling for a while with the explanations offered at uni and you sum up everything rather conveniently in the space of 10 minutes. Thank you very very much!
@Evegnis3 жыл бұрын
Can we just appreciate how perfect the number 7 he wrote at 2:29
@santiagoedwin73433 жыл бұрын
Instablaster
@mkraven46652 жыл бұрын
Thank you so much sir, i got a 100 on my physics 11 just with watching this video the night before my test
@lesdeliresdecharlotte6440 Жыл бұрын
ong school in america is so easy i wishhhh i could live there
@mkraven4665 Жыл бұрын
@@lesdeliresdecharlotte6440 where do you live good sir? france?
@southsyd_iconАй бұрын
😂😂😂lying
@marauder23493 жыл бұрын
This treatment of uncertainty is a bit simplified. For the most part, it will result in somewhat larger uncertainty values than the standard treatment will give. Primarily, you are adding uncertainty components like they are along the same axis, but really they should be added like they are orthogonal components of a vector, and therefore should be added with pythagorean theorem. example: Delta(x+y) = sqrt[ Delta(x)^2 + Delta(y)^2 ] instead of simply Delta(x) + Delta(y) as you have in the video. Similar issue applies with multiplication and division. Wikipedia page: en.wikipedia.org/wiki/Propagation_of_uncertainty quite technical, but thats the underlying approach typically used
@jasonoldaker45913 жыл бұрын
This video was so helpful and I fully understand it now. Thanks for sharing your knowledge.
@tanisha26593 жыл бұрын
first day of IB1 Chem and this saved me! I was so confused until I found out that it was just the uncertainty percentage all along!! :((
@matt0chondria3 жыл бұрын
IB physics for me. Its damn confusing for the first couple days
@obviouslewiscarrollreferen79282 жыл бұрын
Read comment by Marauder234(for future reference). He is talking about the example at 9:14
@teleswope Жыл бұрын
Thank you for saving my physics grade❤
@uchihaaliyah8833 жыл бұрын
This guy deserves more followers
@mye-mail30989 ай бұрын
Thank you so much 🙏
@SEPT19912 жыл бұрын
How did you get the plus/minus values?
@Me........3 жыл бұрын
Thx, i needed this for my physics depth study
@danielnewhouse50446 жыл бұрын
I started calculating uncertainties at the Learning Center using the write-ups Alexis Tibbits had for me. I didn't call it uncertainty. I called it interpolation. Anyway, when she figured out I was doing uncertainty calculations she decided to ruin me.
@oscarhoot23447 жыл бұрын
Hi, if I'm calculating an uncertainty of a formula like this: (44.28+|-3m)/sin(71+|-2°) is the way of doing it the same as you showed?
@khadeejaakhtar74903 жыл бұрын
this helped me so muchhh!!!! thank you!
@berkluleci31722 жыл бұрын
at 09:57 , why g/cm3 replaced to only grams?
@msduff1007 жыл бұрын
thanks I think i get it now... will be able to finish my assignment cheers!
@saamwork82333 жыл бұрын
5:24 What just happened here? The sound almost went insane
@uchihaaliyah8833 жыл бұрын
Mans was glitching 😹
@MultyGirl7 жыл бұрын
Thank u so much! That was so helpful.
@jmontoh6752 жыл бұрын
How do we convert the volume of 2.50±0.003g/cm³ to kg/m³ ? Need help!
@MegaFantomm8 жыл бұрын
what happenned to your g/cm^3?
@ckillmerportageps8 жыл бұрын
You're right: I messed up carrying that onto the next slide. I just added a note. Thanks for the edit!
@javonkspence49327 жыл бұрын
Marco Polo ji
@akolangto82253 жыл бұрын
Thank you very much sir! This helps me a lot.
@samaiatraforti90602 жыл бұрын
Very Nice, thankyou!
@Joey-fb7dg7 жыл бұрын
So if you calculated a value of 2800 which you left to two sig fig, since this was the significant figure of the values used to calculate it (and therefore the highest sig fig we can be accurate to). What happens when you calculate an error of 0.01 for this value should I right them as 2800.00 plus minus 0.01? Or should I write the calculated value of 2800 to a higher degree of accuracy initially?
@delanosmith27132 жыл бұрын
thank you so much brother nice and e-z
@sreyabanerjee45013 жыл бұрын
Thank you so much for the explanation.
@muhammedwaseem17623 жыл бұрын
Its a great video, I made my budget in same way but during the audit of ISO 17025, Auditor is asking me about sensitivity coefficient, can you please upload a lecture on that please?
@matthewpenner23482 жыл бұрын
I think there is an problem with that 4.456 +-.1 to 4 +- 1 I think what you should have done is 4.5 +-1 because the first way you ranges don't even overlap at all
@rachellemackay64384 жыл бұрын
Thank you sooo much for your explanation!
@PrabinDhakal4 жыл бұрын
is there some published paper or some book that verifies the video?
@psychoclan85612 жыл бұрын
thanks. it was really helpful
@michelmtg19798 жыл бұрын
Hi Colin, how can I convert the unit from g/cm^3 to kg/m^3?
@aminzairi22118 жыл бұрын
you divide your value by 1000
@hypernova43347 жыл бұрын
You must multiply your answer by 1000, for 1 kg. is 1000 g., and 1 m. is 100 cm. When you plug in the corresponding values, you get the following: (1/100)/(1/100)^3, which is (10^6)/(10^3), which is 1000. Therefore, you multiply your g/cm^3 value by a factor of 1000 to convert to kg/m^3. Q.E.D.
@pokerater44637 жыл бұрын
y in multiplying n dividing we take percentage uncertainty?????y not absolute uncertainty?
@aryang12324 жыл бұрын
bit late but its just how it works
@doobydoes4956 Жыл бұрын
super helpful
@margarethTuita Жыл бұрын
Thank you
@lucasbieghler70053 жыл бұрын
2021 gang
@alexchiggs88776 жыл бұрын
Splendid video
@uppsala73478 жыл бұрын
You're the best around
@prayan94524 жыл бұрын
This aint Roblox hack
@danmoffett28703 жыл бұрын
So helpful!!!
@elmirelmir8423 жыл бұрын
What does .1 mean?
@friabarade28572 жыл бұрын
badly need the last part prob to be solved 😔
@pickleporkdork73584 жыл бұрын
I need help..what if you are given two measurements (length and width)...you are not given the uncertainty as well as the uncertainty percentage...how would you calculate uncertainty??....(the length btw is 4.07 and the width is 2.52)..thanks
@ckillmerportageps4 жыл бұрын
You're left with a challenge here. Without uncertainties reported with the measurements, or knowledge of how the measurements were made (caliper? ruler? what units?) you are left with making assumptions. The initial measurements were missing information; no amount of calculation can fix that. There is no real way to give a great answer here. If we make some guesses, we do know that the last digit reported is an estimate, and often the uncertainty is half of the smallest decimal value reported. Since each value has a hundredths decimal, a possible absolute uncertainty would be + or - .005 . This is a big guess, though. If you measure with a ruler, you are matching two ends of a ruler (the zero point and the end point) up with your object. That is two error possibilities, so you would need to double your uncertainty. If you used calipers, only one measurement was made. See where we are stuck? When we start guessing or assuming, we undermine our work. Anyone else have helpful thoughts?
@pickleporkdork73584 жыл бұрын
@@ckillmerportageps apologies for not fully specifying the question... the measurement were made with a vernier caliper
@ckillmerportageps4 жыл бұрын
@@pickleporkdork7358 If you took the measurements, what were the smallest divisions on the caliper? Did it show to the tenth place? If so, I recommend using + or - .05 as your uncertainty Your caliper may have come with documentation that indicates it has a narrower range than that, however.
@douglasposho92993 жыл бұрын
Thank you! very much
@kidnamedstev52207 жыл бұрын
you're a saint
@major2milo5 жыл бұрын
like ..who is in 2019???
@dewan_lama Жыл бұрын
thanks sir..
@MoUmarVlogs7 жыл бұрын
awesome video
@jasminejadeyegambaram30583 жыл бұрын
THANK YOU!!!
@NSVSTB8 жыл бұрын
Thank you so much!!!!
@ignasxv3 жыл бұрын
finally understood this shit
@johnchristiana68887 жыл бұрын
Thank you!
@willsonbasyal78837 жыл бұрын
how do we calculate the absolute uncertainty of the result if we consider the square root of two variables A and B? Anyone?
@ckillmerportageps7 жыл бұрын
I ran across this article. web.uvic.ca/~jalexndr/192UncertRules.pdf For square rooting, treat it as though you are raising the uncertainty by the power of 1/2 (for example, the square root of 4 is the same thing as 4^(1/2)). Then, you will multiply the relative uncertainty by the power (in this case, 1/2). Example: ( 9g plus or minus 1%)^1/2 = (3g plus or minus .5%)
@willsonbasyal78837 жыл бұрын
Colin Killmer Thank you so much. Also, how to find out uncertainities while operating with logarithms?
@andreasmartinschwarzinger47298 жыл бұрын
this will help me pass my quiz ya
@ethanshover27346 жыл бұрын
helped alot thanks!
@fumble1088 жыл бұрын
Thank you!!
@nourazzam38503 жыл бұрын
wow, thanks
@maff36536 жыл бұрын
why in minute 9:23 the cm cubes goes negative?
@superbgcool6 жыл бұрын
Because division is the same as multiplication of the inverse of the number.
@kamalatdinkdirniyazov4083 жыл бұрын
in 7.48 you calculated the percentage incorrectly, you should 1 divide by 10, not 100
@eternalexperience24896 жыл бұрын
So helpful
@tommydargydarg17757 жыл бұрын
why did the mass change from 25.00 +- .005g to 2.5+- .005g in the example at 7:00
@hkeyspro56094 жыл бұрын
hello i have a small question how do you found .12%
@shweta79254 жыл бұрын
0.1 % + 0.02 % 0.12
@pavlygeorge89274 жыл бұрын
Thank you man :D
@christothomasm8 ай бұрын
2023?
@saimakhankhan25177 жыл бұрын
God bless you
@loujost Жыл бұрын
This is badly wrong. VARIANCES (squares of the standard deviations) are additive, while uncertainties (standard deviations) are not. So to combine uncertainties when adding, you need to square the uncertainties, add them, then take the square root. See any basic stats book. This is one of the first things we learn in a stats class. Colin's video is wrong about the addition case and also wrong about the multiplication case. Don't trust this guy on stats issues.
@mathislifeforme57217 жыл бұрын
my etea exam is near so plz download imp chapter
@lanolinetoring60976 жыл бұрын
You're wrong. The uncertainty in the addition and subtraction is the square root of the sum of the squares of the variables. It is not just adding the uncertainties
@cwill64915 жыл бұрын
And this is what I was looking for. Thanks.
@mannymorad76295 жыл бұрын
You guy are funny, instead saying wrong,go head and help solve it yourself, this will helpfull all student ms Harvard. Thanks
@loujost Жыл бұрын
Lanoline, you are right. It is a shame that such videos go unchallenged. They are hurting students.
@sanamkumari95417 жыл бұрын
not bad
@Plastik134 жыл бұрын
At 0:35, it is totally wrong. It should be 4.45 +/- 0.03 g and 4,5 +/- 0.1 g.
@skatiaris214 жыл бұрын
your second proposal is correct...the first one is not : if you round 0.0025 it is 0.003..not 0.03
@Plastik134 жыл бұрын
@@skatiaris21 False. The precision of the answer must be the same than the precision of the uncertainty.
@skatiaris214 жыл бұрын
Mike Astro must the same of what? retype correctly please
@skatiaris214 жыл бұрын
Mike Astro i guess u say the same number of decimal places...thats true but you cant transform 0.003 to 0.03...u multiply a number by 10 arbitrarily...
@Plastik133 жыл бұрын
@@skatiaris21 You are right. It is 0,003 and not 0,03. So, in the uncertainty is 0,003, the 4,45 must become 4,450 because the uncertainty must be at the same level that the measure. For the rounding, there is a rule (rounding at the even number) that says that if the number to round is even followed by a 5, we let the even number like that. So, 0,035 would become 0,04, but 0,025 would become 0,02.
@jalilhaddadin69476 жыл бұрын
So helpful
@jalilhaddadin69476 жыл бұрын
I had this law but I don’t know how to use it : (delta d) / d = (delta s) / s + (delta g)/g this example was from my mind , but the point is how do we use it ?? Thanks in advance