This is excellent. Thank you! Helped me a lot in clarifying some fundamental doubts on IRT. Just one observation, I couldn't hear clearly the questions asked by the group. Is there someway in which voice clarity of the group can be achieved? Just makes me feel as being a part of the class.
Is it possible the guessability parameter would change based on the ability of the student? Is guessability always about the pure randomness of guessing a question correct with absolutely no knowledge? A more able student could make an educated guess. Or perhaps narrow down the options or rule out a certain option so their probability of randomly guessing is higher than another.
Thank you for your presentation! I Just discovered IRT mode and you explained it very well! I was wondering if a test is taken by the teacher asking the questions orally to the student, if it would affect the model?
Hi, it was very useful. I am working as a psychometrician in Education industry. I am looking for good resources to develop a medium stake assessments to measure important skills. Could you please help to get some good resources where i can find the best practices?
Item 1 is not the best since it cannot determine who has low ability or high ability because almost everyone got it correctly (9/10). In other words, it has a very low discrimination index.
Yes extremely helpful in clarifying IRT. Thanks so much.
This is excellent. Thank you! Helped me a lot in clarifying some fundamental doubts on IRT. Just one observation, I couldn't hear clearly the questions asked by the group. Is there someway in which voice clarity of the group can be achieved? Just makes me feel as being a part of the class.
Is it possible the guessability parameter would change based on the ability of the student? Is guessability always about the pure randomness of guessing a question correct with absolutely no knowledge? A more able student could make an educated guess. Or perhaps narrow down the options or rule out a certain option so their probability of randomly guessing is higher than another.
Thanks for putting this up. On 26:00 when you talk about P(G getting item 2 correct), what's the correct answer? I couldn't tell from the video.
Great content Ben, learned a lot from this.
Thank you for your presentation! I Just discovered IRT mode and you explained it very well!
I was wondering if a test is taken by the teacher asking the questions orally to the student, if it would affect the model?
your videos are amazing! thank you so much.
Really helpful, thank you very much!
very helpful video, thank you very much
Hi, it was very useful. I am working as a psychometrician in Education industry. I am looking for good resources to develop a medium stake assessments to measure important skills. Could you please help to get some good resources where i can find the best practices?
The explanation for Q.3 is not clear. For me, item 1 is best and item 2 is worst because one is corrected by most and item 2 by few. Thanks
Item 1 is not the best since it cannot determine who has low ability or high ability because almost everyone got it correctly (9/10). In other words, it has a very low discrimination index.