4. What's Significant in Laboratory Measurement? Error Analysis Lecture

MIT 5.310 Laboratory Chemistry, Fall 2019
Instructor: Sarah Hewett
View the complete course: ocw.mit.edu/5-310F19
KZbin Playlist: • MIT 5.310 Laboratory C...
In today's lecture, Dr. Hewett discusses what's significant in laboratory measurement, how to take measurements in the lab, how to do calculations, and how to do data analysis when there's a lot of quantitative data, as in the upcoming Charles River lab.
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[@miao4813]

thanks for letting non-mit student have the access to this wonderful course

[@kelvinadimas8851]

Thanks for substituting my boring professor

[@manishbhoye4344]

Nice and informative lecture on accuracy, precision and errors.

[@aniksinha3734]

Informative presentation on error analysis.

[@santidas1]

Informative session on error analysis

[@shribhagwan4539]

Information on error analysis is very informative and efficient...

[@dr.nayanpanchani9015]

Very nice explanation on Accuracy, Precision, Types of Errors, Q-test, Error in Measurement ..

[@mituition2023]

Absolute error is not measured value minus true value. It's true value minus measured value. If we consider the modulus value then it's OK.

[@ramnandaniya7636]

Informative session

[@YTantirungrotechai]

really good explanation. Thank you.

[@shibashishalder427]

Very informative lecture.

[@indie1751979]

Nicely explained 🙏

[@sonajigaikwad6863]

Very informative talk

[@manukumarbhandoria2554]

Very informative lecture Thanks

[@rohitraj4275]

Thanks!

[@dr.s.rajalakshmi5424]

Very informative lecture

[@peeweesbigadventure1109]

Great lecture mIt

[@willykipla7]

Wow! 😊 Thanks Madam 🙏

[@subhajitsikdar7658]

Interesting lecture

[@asonysingh26]

Very informative

[@razan0215]

ANYONE KNOWS HOW DID THEY GOT 0.05ML (18:00) ???? WHAT IS THE RULE ?

[@compresswealthdivideeconom3757]

I could say much on this matter. I wasn't supposed to be in a company lecture on the matter - I posed a question and it got management upset. At another company I'd see 7 significant digits being reported for analysis of drugs from rats. Oh well, can't make so-called scientists understand.

[@galenseilis5971]

This presentation makes the mistake of confusing a population standard deviation with a sample standard deviation lacking Bessel's correction.

[@drkundantayade3309]

Statistical Methods of Analysis

[@abdullahashraf4420]

Can someone explain why we square add and underroot the values for absolute error (total)? Like what's logic behind it. Asking cause this is a practical subject

[@wowZhenek]

logic is related to how you calculate standard deviation of a system, which consists of parts, which have their own standard deviation or, respectively, error.

[@bisposjr]

Sorry, but the lecturer complicated a very practical subject.

[@numericalmethodsguy]

She did a good job. Sometimes these matters do get complicated if we are doing a rigorous and robust analysis.