1. The concept of measurement uncertainty

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1. The concept of measurement uncertainty

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ESTIMATION OF MEASUREMENT UNCERTAINTY IN CHEMICAL ANALYSIS

10 жыл бұрын

Ivo Leito
University of Tartu Professor of Analytical Chemistry
This video is part of the on-line course on Measurement uncertainty
estimation that is currently being developed at University of Tartu
(Estonia) and is available from sisu.ut.ee/meas...

Пікірлер: 29

@benesgro4531 7 жыл бұрын

This guy is my spirit animal. Thank you!

@biruk8617 4 ай бұрын

Thank you for explaining the "abstract" in plain and simple language for all to understand. Excellent work!

@jamescrowther1234 Жыл бұрын

I hope this guy is doing well, such thorough but well paced lecturing!

@innocence8319 10 ай бұрын

I'm grateful prof ivo for the foundation you gave me in this subject and for simplifying measurement uncertainty

@douglasfurtek7637 3 жыл бұрын

Thank you Ivo. Best explanation of measurement uncertainty I have seen so far.

@DK8617 4 жыл бұрын

Thank you for the simple explanation of the measurement uncertainty. I had explained the concept to my analyst for years, most of them can't understand the concept very well, even with help of Eurachem and NATA guide. I will share the video with my team and see the outcome.

@emadeddadu6945 8 жыл бұрын

very helpful and clear introduction to the concept of measurement uncertainty

@joshuaoduroadu5376 3 жыл бұрын

Excellent presentation . He really made the concept come alive.

@md6026 4 жыл бұрын

Clear explanations! Better than a lot of (useless) books! Thank you

@H7s7h 10 жыл бұрын

شكرا كثيرا للشرح الممتاز والسهل . مادة علمية ممتازة وشرح رائع . شكرا جزيلا Thanks

@keith789654 Жыл бұрын

Great video. Very well explained and engaging.

@zir786 6 жыл бұрын

Do you have enough pens?

@ghgh2098 6 жыл бұрын

(Thank you Sir, it is very important to understand the concept of uncertainty in measurements (test or calibration

@dildonius 10 жыл бұрын

Here we see Count Dracula himself teaching us all about The Concept of Measurement Uncertainty!

@jaffersufi5665 6 жыл бұрын

It is a good foundation of understanding uncertainty measurement

@karladuranlara2073 3 жыл бұрын

Thanks, i am understan you !

@kamyarphysicsschool5065 Жыл бұрын

Great! you can also see my lesson in topic. It may be a different approach. Update me about your opinions.

@ashnaautar2757 7 жыл бұрын

the true value of lead should be in the range:5.6........6.6 mg/l. is the 5.6 mg/l correct?, shouldn't it be (5.7 minus 0.5= 5.2mg/l).

@bytek1945 7 жыл бұрын

No cause you have to use measured value as a reference point (not true value because we do not know the true value) so 6.1 +- 0.5 mg/l :)

@coolman4607 Жыл бұрын

i like your accent and the way you teach

@StanisTatang 3 ай бұрын

Where did you get that 0.5 measurement uncertainty?

@bipinbinod532 Жыл бұрын

Superb

@moatazanwar6564 6 жыл бұрын

Well explained, thanks!

@ashrafal-warraquiy6614 9 жыл бұрын

Great Thanks

@RUGTHIER 5 жыл бұрын

Gracias

@anuragkurle4827 7 жыл бұрын

The uncertainty should be .4

@krispickrell2864 6 жыл бұрын

No. The uncertainty isn't the difference between the measured value and the true value, or 6.1-5.7 = 0.4. Since we don't know the true value, we choose an uncertainty range of a size sufficient to give us a high probability that the true value is within the range. The uncertainty in the example of 0.5 is chosen dependent on the definition of "high" in the probability and the variance in your measurements. Typically we chose a range that gives us a 95% probability that the true value is within the range. But again, it depends on the probability and the measurement variance.

@ema4617 3 жыл бұрын

@@krispickrell2864 thanks that help a lot! i was quite confuse just now

@gazzzada 2 жыл бұрын

@@krispickrell2864 according to GUM uncertainy only characterise our knowledge about measurement done. And in many many measurement models 95% range not obviousely relates to 'true value', but rather to measurand.