Z-Score පිටුපස ගණිතය ප්රශ්න කරමු | cutoff marks වල ඇත්ත - Kethmi Hettige
I invited Kethmi Hettige to talk about the Z-score. For those who did A/Ls in Sri Lanka - this is a life deciding equation. Kethmi received her Bachelors in Industrial Statistics and Mathematical Finance from the Faculty of Science, University of Colombo. She is currently doing her PhD in Singapore.
00:00 About Z-score
00:59 Origins of the equation
01:52 Statistical measure
04:30 Mean,SD can be subjective
05:33 Why use it for A/Ls?
06:46 How to calculate it?
10:35 Problem with 2011 A/Ls
11:49 Bell curves
14:03 Biggest assumption with Z-score
16:09 Is it a good method?
20:22 Representative samples
21:35 What determines cutoff marks?
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#PhDAdvice #SriLanka #Research #Sinhala #Science #Engineering #ResearchAdvice
Видео Z-Score පිටුපස ගණිතය ප්රශ්න කරමු | cutoff marks වල ඇත්ත - Kethmi Hettige канала IQ Labs
00:00 About Z-score
00:59 Origins of the equation
01:52 Statistical measure
04:30 Mean,SD can be subjective
05:33 Why use it for A/Ls?
06:46 How to calculate it?
10:35 Problem with 2011 A/Ls
11:49 Bell curves
14:03 Biggest assumption with Z-score
16:09 Is it a good method?
20:22 Representative samples
21:35 What determines cutoff marks?
IQ Labs covers a wide range of topics. Please check my playlists - I try my best to keep things organized.
PhDs and Scholarships
https://www.youtube.com/playlist?list=PLuiDzxVT78sRJk6b5Gbl7_czBRa7vb6hh
Research Advice
https://www.youtube.com/playlist?list=PLuiDzxVT78sTlfv2sW0j2l9sZ3gbtwToV
Communication Advice
https://www.youtube.com/playlist?list=PLuiDzxVT78sSMs0ZgiHKdn6feh_rWMGbx
#ScienceTalks
https://www.youtube.com/playlist?list=PLuiDzxVT78sSs9hKjstFNnDFaOMNDMt6l
Python for Scientists
https://www.youtube.com/playlist?list=PLuiDzxVT78sSk9jEuiJAb9xLkeBbC5ap3
How I make these videos? Check this video:
https://youtu.be/zUTy48ry5Dc
My equipment:
https://youtu.be/D0W8pEEme6w
#PhDAdvice #SriLanka #Research #Sinhala #Science #Engineering #ResearchAdvice
Видео Z-Score පිටුපස ගණිතය ප්රශ්න කරමු | cutoff marks වල ඇත්ත - Kethmi Hettige канала IQ Labs
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