Understanding the p-value - Statistics Help

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1. Wow love it, i really like chocolate and your accent, i wonder if you are Irish
2. thank you so much its been like 3 sessions of stadistics and i havent been able to understand this, this 4:42 video should get paid instead of my teacher
3. This could not be more incorrect (and is now repeated in a number of terrible stats textbooks). In order to calculate the p-value you're deriving it from an assumption that the null hypothesis is true. But the p-value is uniformly distributed when the null hypothesis is true which means all of them, .05, .5, .0001, are equally likely to occur and are not, in and of themselves, evidence of the effect. Without stating beforehand some sort of cutoff you're just like the person who stumbles across something odd and calls it a surprising finding
4. the video was dumb enough for me to understand. thanks
5. You are my hero!
6. really sorry but no
7. thank you for posting
8. Thank you!! Your video was such a great help for a refresher on the course. :)
9. Really Great methodology of teaching. I would give more than one likes if i could. Thank you dear Miss!
10. why is p-value it the probability of getting a mean of Xg or LESS from a sample of the same size? Why is it not the prob of getting a sample of Xg or MORE ?
    Thank you
11. Finally!! Got it. thx.
12. Excellent presentation on Youtube we would like to link to this. Also It would be wonderful if you could tell me about other youtube presentation you have on line, and other really good youtube presentation you know.. I am professor emeritus at the University of pittsburgh and former director of a WHO Collaborating Centre. I am writing you as I am collaborating with the Library of Alexandria in Egypt to build research capacity in Arabic and African countries to attack the deadly problem of "stataphobia" (my word). This is the fear of statistics and not having expert advice. Africa only publishes 3% of the world's literature, a primary reason for this the lack of statistical skills (stataphobia). We have created the research methods library of alexandria to boost research capacity. This is the largest virtual research methods library. Also we are collecting statistics books from 100 of the world's leading statistics experts.
    I am writing you for a simple reason. When I taught statistics there always was ~15% of the students who just did not get it. I thought it would be wonderful to have you come in to teach these kids from your perspective, or a professor from our statistics program. This obviously is not possible, but with youtube it is. I am looking to find the best lectures on the web so that if a student cannot understand "histogram", they can learn from you. I am writing to people have the best lectures on the web to link with them, and to get their advice about other grand lectures like yours to include. http://ssc.bibalex.org/helpdesk/introduction.jsf
    THank you very much for an outstanding lecture, and we hope to collaborate with you to improve research productivity in Arabic and African countries.
    
    Please write to me at ronaldlaporte@gmail.com
    Sincerely
    Ronald E. LaPorte, Ph.D. Professor Emeritus
    Ismail Serageldin, Ph.D. Director of the Library of alexandria
13. So, how do we KNOW that the p-value is 0.18? was this just given?
    I'm having trouble finding the p-value.
14. All of the Death Note fans know what's up. The crazy thing about watching this at THIS VERY MOMENT is that I'm currently listening to songs from the Death Notes OSTS. What... the... hell...
15. I love your videos
16. I know about your disclaimer but I still need to say "We fail to reject the null hypothesis" instead of "We accept the null hypothesis" (If I remember correctly :P)
17. I appreciate the Death Note cit.
18. I'm doing a 2 independent sample T-Test: DF=8, T-Stat=2.30316, alpha=.05
    
    Using TDIST in Excel I got P-values of .05022 for a 2 tailed test and .02511 for a one tailed test. Because .02511<.05 do I reject the null?
19. wonderful!
20. After watching this video, I'm still clueless about p values and the "null hypothesis". The null hypothesis needs to be better explained and WHY a low p value implies rejection of the null hypothesis.