It’s honestly kinda sad that i’m paying $400 each class on college just to teach myself with youtube videos and my professors just sitting back, doing nothing & getting paid for it…. Thanks for this video anyways.

@victoriamccord3567

Жыл бұрын

Yeen never lied.

Who teacher made them watch this

@sync9585

5 жыл бұрын

choper me

@jaymanh

5 жыл бұрын

send help

@nodice100

4 жыл бұрын

@@jaymanh lmfao same fam

@user-qw5gb3qb7b

4 жыл бұрын

손

@albiemanes4739

4 жыл бұрын

Yep

Learned more in a 20 minute video than a quarter of chem class. Guess whos acing her exam? Thanks!!

@zackstone8822

3 жыл бұрын

You ace that exam

@elitealphaviews8870

3 жыл бұрын

Zack Stone that was 5 years ago lol

@zackstone8822

3 жыл бұрын

Elite Alpha Views yeah Ik 😂

@crimsondawn1996

3 жыл бұрын

I hope you aced the exam :)

@hunterepicness4303

3 жыл бұрын

@@crimsondawn1996 Why are we all commenting on a comment that is 5 years old? She's probably in her 3rd year of University rn

This is way better than Khan Academy's explanation imo.

Excellent resource, prepared very thoughtfully and systematically! Thank you, sir!

What a wonderful explanation!!

You explained really clear and you are an excellent teacher. Big thank you for saving my life!!!!

Very well done. Great illustrations and slow and steady presentation. I'm using this with my class tomorrow. Thank you for your time to create this.

I feel like after watching this video, my whole perception regarding measurements is changed!!! We live in an absolute imperfect world. Its all about the extent we can go for precision!!! ☑

this video is amazingly creative with the metaphor of Pacific and Atlantic. Thanks a lot.

THIS WAS LIFE CHANGING!!!!!!!!!!!!! My professor is a dr. and he couldn't even explain this in a way that his class could understand it! I really appreciated the video and it completely helped me understand precision and sig figs! I even took notes to refer back to. thank you!!

Now I understand the significance of significant figures! Pun intended! Great video! Both comprehensive and easy to understand; thank you!

Iam in love with the way you explained it!! You explained each and everything so clearly.....😊

Excellent explanation. Worth watching.

You helped me in my homework thanks😀

I am a chemistry teacher and I must commend you on your accurate information, clear explanations and well presented video.

thank you sir! learned this stuff for only 20minutes . lot of helped . earned a subscriber definitely!

THIS VIDEO TAUGHT ME MORE IN 20 MINUTES THAN MY TEACHER DID IN 5 CLASSES

Thank you for making this, the details were very useful.

THIS SAVED ME. THE PACIFIC ATLANTIC TRICK IS GENUIS. I LOVE YOU

@aquafzx467

3 жыл бұрын

stupid

I really enjoyed this video and understood every concept. Thanks 😊😊

first class teaching fascinating ideas tnq sir

Excellent video. Thank you

what software do you use to make these presentations, such as the animations with the dartboard. Thank you.

Perfect video. Love it. ❤ Thank U 😘

Wonderful explanation

Thank you SO much for this! I at first hesitated due to the length of the video, but having watched it I am VERY indebted. The discussion of significant numbers and measurements drove me crazy today when there were obvious inconsistencies on the material that our teacher provided. It is relatively easy to identify how many significant figures are in a number ALREADY DETERMINED, but to take a measurement yourself and determine how low one can designate the significant figures was not touched upon. I can sleep well now knowing that significant figures are all known numbers PLUS one estimated digit. WHY this wasn't in the textbooks is beyond me.

@nighttornado9342

9 ай бұрын

the dick riding crazy

Wow so exciting ✔ It helped me to clear my concepts which were confused by me bcz of my classfellows 💚

Excellent video!

The best video big thumps up :)))))))))

extraordinary explanation

Love how you explain it !

thanks soo much ,helped me in my chemical analysis course

You're doing God's work ❤

I wish this guy was my teacher I learned this quicker than my teacher.Now I can go ace my Lab Techniques exam!

Thank u very much for the pure explanation ❤️❤️❤️

Thank you for this video, it is a big help for my 9th grade Physical Science Lab on escience lab

Thank you very much, it is quite helpful.

YOU SAVED MY LIFE!!!!!!!!!!

You saved my lab!!

Very nice! I really will use this1

Thanx . You made it clear to me

Huge help thanks!

love this video, it is helpful for me, tysm

I guess that 007 agent was really just agent 7 all along. James Bond has lied to us all.

@marciacuesta8887

6 жыл бұрын

LOLOLOLOL!!! Awesome! You got it!

@JohannesMageroy

5 жыл бұрын

@@GPCTM You must be fun at parties

@GPCTM

4 жыл бұрын

what's a party?

Nice explanation

Really helpful

This video was very helpful to me! I'm curious to know what grade this is for? Thank you!

@mrfarabaugh

5 жыл бұрын

High school chemistry (10th grade)

Taking notes on the first 10 min for my class......

tysvm this clarified so much.

I learned more in 20 minutes then I have in 2 weeks

@lucylee1643

3 жыл бұрын

Gracie Hines Same！

Thank you It makes sense to me

welldone

Wait so if I had a ruler only marked at 1 and at 10 and I estimated it at 7, would 7 be significant???

Nice video

Thank you!!!

Wonderful

can you define the meaning of equal precision measurement

What happens when a ruler is only accurate to 1/2 of a centimeter and the thing I'm measuring is really 4.43 cm? Do I round to 4.50 or do I put in two uncertain values?

@mrfarabaugh

6 жыл бұрын

In my opinion, I would still estimate the length of the object to the nearest 0.1 cm

@conorkilhenny5362

6 жыл бұрын

Michael Farabaugh thanks

Thanks a lot.....

Thank you 📝👍

Thanks teacher

thanks besti

Pls give me example for accuracy and precision

I have doubt regarding measuring pencil length. E.g. if scale has 2 measuring number 0 and 10 then the length of pencil should 0 cm long. How could it be 6cm? Similarly a scale has least count 1mm from ranging 0 to 10 cm then it can only show length of pencil 6.7 cm , then how can it be 6.75 cm?

@mrfarabaugh

6 жыл бұрын

Your final digit is the estimated digit, which is one power of ten smaller than the divisions that are marked on the ruler. If the length of the object falls somewhere between the marks at 0 cm and 10 cm, the final digit in your estimate of length should go to the one's place (for example: 6 cm). If the length of the object falls somewhere between 6 cm and 7 cm, the final digit in your estimate of length should go to the tenth place (for example: 6.5 cm). If the length of the object falls somewhere between 6.7 cm and 6.8 cm, the final digit in your estimate of length should go to the hundredth place (for example: 6.75 cm).

So, for the example at 5:00 the measurement would be recorded 6 ± 5cm ?

@mrfarabaugh

7 жыл бұрын

I would say that a reasonable person could estimate the length of any object on that particular ruler to within ± 2 cm of the actual measurement. If we assume that the uncertainty is ± 2, then I would say the measurement of the pencil would be recorded as 6 ± 2 cm.

@chruszczowskibrzeczyszczyk707

5 жыл бұрын

Michael, you are inconsistent with your statements. Once you are saying that you measure to the one tenth of the scale (so in the case that we have ruler with marks at 0 and 10 cm, we can read up to 1 cm). But above you are saying that with particular ruler one can measure to within ± 2 cm. So which is right??? My answer to that question is - NEITHER. With the ANY ruler or scale you can read ONLY up to the HALF of the smallest grading. So, in the above example at 5:00 min, the readout can be done to within 5cm (one half of the 10 cm); that means that the correct answer is: 5 cm ± 5cm Of course it means that one should use different ruler to measure that pencil. As a rule of thumb - with any ruler/scale one can measure/report value ONLY up to the HALF of the smallest grading (unless Vernier scale is there). That is because the Manufacturer of the ruler made it in such a way that we can be sure only up to the half of the scale marks. Otherwise producer would put more lines for me. The reason there is no more lines b/c they are uncertain!!!!

you should make a updated version of this video with time stamps and better visuals.

Thanks!

excuse me ! I have a question which is more precise 5.41cm Or 5.412cm .Thank you.

@mrfarabaugh

7 жыл бұрын

A measurement of 5.412 cm is more precise than a measurement of 5.41 cm. If we assume that the final, estimated digit can vary according to ± 1, then 5.412 ± 0.001 cm is more precise than 5.41 ± 0.01 cm because it has a smaller range of uncertainty associated with it.

Hey sir what is relation between accuracy and significant figures

thx bro you teach better than my teacher, my teacher gives out work and expects us to know it LOL

Sir, i have a question. Sir in the number 36000 why the zeros are not significant ..if we take it as 36000 seconds...then all digits must be significant otherwise the measurement wouldnt make any sense

@mrfarabaugh

4 жыл бұрын

Focus on the number, and not the unit. If the number 36000 has no decimal point at the end, then all we can say for sure is that we know this value to two significant figures. The actual value of the number could fall anywhere in between values of 35500 and 36499. If, on the other hand, we have a measurement of exactly 36000. we need to place a decimal point at the end of the number. This would indicate that the value is known to five significant figures.

I have something to clarify, at 7:48, I am quite bothered with the usage of the word "precision" or the words "more precise", I think the better word to be used is accurate or more accurate, am i right? I hope anyone would clarify my dilema with this concept :) thanks

@mrfarabaugh

9 жыл бұрын

Norman Dañez Accuracy refers to how close a measurement is to the true value. There is no difference in accuracy between 6 cm, 6.0 cm, and 6.00 cm. They are all the same, in terms of their numerical value. On the other hand, precision refers to a set of measurements and how close they are to each other. When the word "precise" is used to describe a measurement (or a ruler in this case), it refers to the fact that there is a small range of error. A measurement of 6 cm can fall between 5 cm and 7cm. A measurement of 6.00 cm falls between 5.99 cm and 6.01 cm. Therefore 6.00 cm is more precise than 6 cm because there is a smaller range of error.

@bolso66

8 жыл бұрын

+Michael Farabaugh Can one say that the second and third rulers have a better resolution and therefore the measurement is more accurate (rather than precise)? If I understood right precision refers to a set of measurements not to one single measurement as in the video?

if we measure a value and it gives a value 200 and the intrument is caple of being accurate for the 10th position?????

@mrfarabaugh

10 жыл бұрын

It sounds like you want the measurement "200" to have exactly two significant figures. The only way to do this is to use scientific notation, as in 2.0 x 10^2

So significant figures are related to precision in that they indicate how precise a number is.

Please I want more examples precision and accuracy

Thxs 👏

Must read: Walther, B.A., Moore, J.L., 2005. The definitions of bias, precision, and accuracy, and their use in testing the performance of species richness estimators, with a literature review of estimator performance. Ecography 28, 815-829.

وايد تسولف ماشالله عليك

we love mrs krug

@che1sxii

4 жыл бұрын

eden wtf

@edent.4640

4 жыл бұрын

@@che1sxii you CRACKHEAD

Thank you (:

Significant figures tells about precision or accuracy?

The Pacific one is confusing can someone help

great

Thank! U help me So... i can do the test next week :)

00234000 has how many sigfigs?

@mrfarabaugh

6 жыл бұрын

I'm not sure why there are two leading zeroes in your number. If your number represents 234000 (two hundred thirty-four thousand) with no decimal point at the end of the number, then it has three sig figs.

You Man. You know.

Why can you say that the deviation in the number 5.412 is ± 0.001? As you explained, the "n.nn2" digit is estimated and therefore could range from 0 to 9, yielding in an absolute deviation d < ±0.01. Our measure's smallest division is actually 0.01 units, isn't it? I would suppose a deviation of d < ± 0.001 in 5.412 if I considered the number 5.412 as the median of this range: 5.4115

How many letters are in the words "Significant Figures"?

yes

just curios what grade are everyone here in ?

@ItzLake

8 жыл бұрын

+Shamma Altenaiji I'm 6th

@annieseling9369

8 жыл бұрын

8th

@princessstephanie8659

7 жыл бұрын

10th

@dianadominguez3742

7 жыл бұрын

college sophomore xD

@TheShellsSecert

6 жыл бұрын

11th

You've got a bautiful voice. Just saying.

If an instrument has a L.C of 0.1 cm it means we can guess upto 100th place ten power one higher than the L.C, but if a scale has L. C OF 10 kg and a measurement like 8000 kg with this scale should have 2 significant figures but it has 3 S. F WHY? how?

@umuterdogan5735

5 жыл бұрын

If you weigh the 8000kg on a scale with 10kg division, then it shows up as 800. Then you have to add up ".n" , that is the estimated digit, e.g. it becomes the value 800.0 (x 10) kg. That yields to 4 sig figs. That is what I guess it should be.

@umuterdogan5735

5 жыл бұрын

If you follow this youtube video kzread.info/dash/bejne/mKOTs7F7ZpiqZ84.html, you will actually get your expected answer of 3. Let me calculate it briefly: The resolution is 10kg which is shown as 1 digit in the least signficant position. This digit is already the estimated sig fig, which is estimated by the scale for you. You must not estimate another digit. Also this least sig digit represents a range from 5 to 14 kg due to mathematical rounding to 10kg. Recap: The number "800." (x10) kg has 3 sig fig digits. Also listen carefully to this part of that video to get the explanation kzread.info/dash/bejne/mKOTs7F7ZpiqZ84.html . Hope this helps a bit.

Big Brain

sweet vid

are teacher calls them significant digits

I want some sig fig merchhhhhhhh

@elishacrenshaw2408

6 жыл бұрын

YGOdaze Dr ddndnfntn H ahahhaha I

@elishacrenshaw2408

6 жыл бұрын

YGOdairiuze

God u saved me

How you doin' Cuesta students.

Ugh thank you