Wald test | Likelihood ratio test | Score test

See all my videos here: www.zstatistics.com/videos/

[@abdulrahmanalshammari7256]

This work is much appreciated. Thanks a lot for your clear explanation. Could you please provide an example and show how to use the tests?

[@kristny1284]

I was looking for an explanation of the Wald test. This was perfect! Great visual and great explanation. Thank you.

[@JC-dl1qr]

Never been this clear! Appreciate this explanation.

[@gavingordon7782]

Thank you for the insight!! Much appreciated. Nice colour scheme it's easy on my eyes

[@aakupsp]

Thank you @zedstatistics for this amazing video. Without having much information regarding mathematics I am able to grasp the overall concept and difference between three methods. One thing that might help me would be real-life examples where these tests could be applied. For example anomaly detection, etc.

[@PedroRibeiro-zs5go]

Thanks!!! That's a great video and intuitive explanation!

[@talyasadon9158]

Thank you so much! All of your videos are so informative and helpful!

[@oluremiabayomi5924]

Thank you very much. I’m grateful

[@farheenahmed5103]

Thanks for the video! I am a bit confused about why a confounder is sometimes a nonsignificant predictor based on likelihood ratio test. By definition a confounder has association with both - exposure and the outcome, and it's not in the causal pathway. So, if a regressor is a confounder, the p value of LR test on it's removal from the model should be significant, right? Why is it the case that regressors sometimes have nonsignificant p value of LR test on their removal from the model but are found to be a confounder as per change-in-estimate criteria? Is this because of type 2 error in LR test where we accepted the null hypothesis when we shouldn't have done so?

[@gurns681]

All these concepts have finally clicked.. Thank you!

[@michaelxh9639]

Great video, Very clear, thank you very much!

[@antonsharov2308]

Hi, thank you for this video. Shouldn't there be absolute value for theta_hat - theta_0 on 7:02 ?

[@deniseniu5406]

Great video. It is so much clearer than my prof.

[@firdovsihasanzada]

You are great! Thanks for the explanation.

[@whetstoneguy6717]

Mr. Justin Z--you state at 13.25 of the video there is additional information in the Textbook. Please provide me information about the Textbook so I can purchase it. Also, the video, although excellent, did not contain any examples. If the examples are in the Textbook, once I get the Textbook I will hopefully have a better understand of the Wald Test, etc. Thank you. WhetstoneGuy

[@avestaabdulrahman6549]

Thank you very much, your work is great!

[@yucongwu3067]

Much appreciated for your explanation!

[@mbikaziketelo5707]

Hello I just need to check if you got sometime and show how is the LRT converges to a Chi-square distribution?

[@batatambor]

I really appreciate your videos. However it's hard for me to relate the last 4 videos of this series. The first two are pretty clear but I can't really see when to use a Likelihood approach and when to use a confidence interval approach to determine the parameters of a sample. Then we have a whole video on hypothesis testing, in which we use confidence intervals and p-values to acess probabilities of accepting and rejecting hypothesis to finally see another approach of Hypothesis testing, now using Likelihood functions, again. It seems to me that we have a bunch of different tools to assess the same information and it's not clear to me when use each one of them. Your videos are great, thought.

[@particleonazock2246]

What are tthe prerequisite videos for this?

[@mehrdadkazemi3969]

Amazing work here. thank you so much

[@weiweima8775]

Best explanation I have ever seen! Thanks a lot!!!

[@wolfgangi]

is score test the same as white test?

[@mbikaziketelo5707]

I love your videos very much .

[@tassoskat8623]

Hello there. Which is the textbook that is referred on the end of the video. I would love to follow along!

[@conigrave]

Very clear, thanks!

[@Dupamine]

What does it mean that wald test is chi square distributed ? I know what is chi square but can anyone elaborate

[@alexisgarofalo6783]

Thank you so much for this video!! Needed something to explain the big picture

[@hilariomolinaii355]

What is the title of the text book?

[@jcg7990]

What is the textbook you are referring to?

[@Maihuit]

Thanks for the video sir, Could you explain to me why are we multiplying 2 to LR ? And is score test same as Lagrange multiplier test?

[@duartevader]

Score test is the same as Lagrange multiplier

[@MrTugebox]

Perfect explanation

[@luisalfonsoprudenciobarrie2670]

What is the name of the textbook??? Thanks for the work mate

[@user-bz8nm6eb6g]

Awesome!

[@sirabhop.s]

Thanks!

[@ctnelsoncar]

Saved my life

[@happyandhealthy888]

have a look on zero.

[@happyandhealthy888]

zero is good.

[@biswajitpattnaik3433]

u need to be louder & pronounce words clearly in ur videos

[@user-bz8nm6eb6g]

Thanks!