Needed a refresher on this subject, and this video did a wonderful job of covering all aspects of this subject. Thank you for making this free and available to the public, I’m sure your students are happy to have you.
Thanks so much for this series! Helped explained everything better than my stats teacher ever will. Could you also do a AP Stats vocab review guide before the stats exam this thursday?
Pure Genius. I've been trying to figure this out my whole class. with 2 weeks left, this did it. Question, what if you do not have a percentage of confidence and must give it with the numbers you have? is this possible? such as lets say 40% of folks approve of the president and this was given to us from a sample of 1500 people. Is it possible to find a confidence interval for this percentage of people.
No it is not. You have to be told the level of confidence so that you know how wide to make the interval. Just knowing your sample size and sample proportion alone can not tell you what the confidence level is. But, I have seen some problems where they give you sample size, sample proportion, AND the margin or error and you need to solve for the confidence level. That is possible.
KHANACADEMY couldn't help me.
JBSTATISTICS couldn't save me.
I was in the midst of degenerating till i clicked on this video.
U saved me sir
Sooooo glad I can help! Your comment means a lot!
Definitely the best video on this topic on RUclips.
Anepicflyingbrick _ thanks!!!!!!!
Thanks so much!!
I love this but ur mic is raping my ears
Needed a refresher on this subject, and this video did a wonderful job of covering all aspects of this subject. Thank you for making this free and available to the public, I’m sure your students are happy to have you.
Thanks! Sometimes I am not sure they are all happy to have me, haha
Thanks so much for this series! Helped explained everything better than my stats teacher ever will. Could you also do a AP Stats vocab review guide before the stats exam this thursday?
A very good presentation.
Thank you!! The textbook wasn't cutting it for me and I have a test tomorrow. This really helped.
awesome, glad I could help!
Superb lecture in all ways. Hope your cough/cold/allergy problem gets solved.
I thought you had to use t* insteas of z* if the stdev is unkown.
I am jealous of your students😭
you are a wonderful teacher.
Thanks so much that means a lot!!!
thank you for saving my grade!
Glad I could help!!!!!
Great video.! you said, how much are you willing to go up or down :P LOL
Hello, by any chance do you know the name of a black and orange book that has set of test for all the chapters of the Stat textbook.
newmusic sorry I don’t know what book you are talking about.
where did you get the .84 from at 3:27?
1-p=0.84 (it represents q)
Pure Genius. I've been trying to figure this out my whole class. with 2 weeks left, this did it. Question, what if you do not have a percentage of confidence and must give it with the numbers you have? is this possible? such as lets say 40% of folks approve of the president and this was given to us from a sample of 1500 people. Is it possible to find a confidence interval for this percentage of people.
No it is not. You have to be told the level of confidence so that you know how wide to make the interval. Just knowing your sample size and sample proportion alone can not tell you what the confidence level is. But, I have seen some problems where they give you sample size, sample proportion, AND the margin or error and you need to solve for the confidence level. That is possible.
where did the .0277 come from??? @10:00
That was the standard error of the sample proportion, square root(0.16*0.84/175)
Why is he yelling at me