What is a p-value?
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A brief intro to the concept of the p-value, in the context of one-sample Z tests for the population mean. Much of the underlying logic holds for other tests as well. I have an updated, revised (and slower) version of this video at www.youtu.be/UsU-O2Z1rAs.
Comments
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can you talk faster?
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too confusing
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THANK YOU OMFG
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Does anybody know how to calculate the p-value by using the value of t formula??? THANKS
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Great video. Will be getting an A on this final thanks to you!
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Very hard to follow and very confusing; I'm also a third year university student and wanted to refresh my knowledge for a paper I'm working on.
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To all those confused, go to 2:52
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Very confusing way to describe the p=value. Didnt understand a word of it and I'm in 3rd year of Uni. There must be easier ways of describing it.
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where does he get 0.002 for the p value
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dont we have a mathematical formula to calculate p-value rather than looking at table?????
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Thank you very much, I don't know where I'd be if you didn't post this video, you are the best!! Thumbs up!
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Lets say, if I have confidence level as 90% and my left p-value equals to 5%. does this 5% represents the uncertainty in the project ? pls I am confused as i have the plot but I am not sure either the 5% the uncertainty or not?, tq
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Thank u .. U R a flag
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Mate this was fucking dogshit and explained nothing
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So how do you calculate p-value?? I don't understand what "degree of freedom" means
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it's the strength of the evidence in favor of the null hypothesis .... and when you get a Z value of 2.87 you find that the p-value is very low ...here it's 0.002... so the wording to interpret this p-value is " ... since this p-value is so low the strength of the evidence in favor of the null hypothesis is very low, so low in fact that we reject the null hypothesis of no difference in favor of Ha ... later on you use a @ of 0.05 (or so) as a cut point for a p-value but here you'd still reject the null in favor of the alternative hypothesis.
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Wow, great way of explaining, Love the way you lecture.. Keep it up !
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haha.... looks like im listening to a Horse Race commentary .
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I was crying and moaning by the end of the video.
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Why are you not in sports broadcasting?
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