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Confidence interval

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Uploaded by on Apr 14, 2008

I illustrate the confidence interval construction with an example: the P/E ratio of 28 companies. The point is to say with confidence (e.g., 95%) that the "true" population lies within an interval.

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Education

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Uploader Comments (bionicturtledotcom)

  • This visual-spatial learner says "thank you!"

    I'm now 95% confident that I understand confidence intervals :-)

  • @bronxling thank you, what a nice-funny compliment, much appreciated!

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All Comments (19)

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  • Thanks. This is simply fantastic

  • @messakg123 degrees of freedom is always n-1

  • How do you know the degrees of freedom?

  • u r really wonderful teacher. i wish u all d best.

  • This was so helpful!! Thank you Bionicturtle!

  • Thank you. This is great. A lot of the stat videos on youtube are pretty badly done, so it was great to find a better one.

  • You're awesome Mr. David!

  • VERRY HELPFUL!

    Having everything on one screen is a beautiful thing.

  • hey! how do you make that kind of graph in excel?

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