Arithmetic Mean vs. Geometric Mean

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  • เผยแพร่เมื่อ 29 ม.ค. 2018
  • This video is first in a short series detailing when you would use the geometric mean rather than the arithmetic mean.

ความคิดเห็น • 29

  • @madelineliston5095
    @madelineliston5095 3 ปีที่แล้ว +4

    I ran into this at my job as a math tutor and didn't know what it meant. This was super helpful, thank you! :D

  • @Dangnguyenguitar
    @Dangnguyenguitar 2 หลายเดือนก่อน

    You unlocked my mind

  • @dyson9422
    @dyson9422 2 ปีที่แล้ว

    Thank you. That was well explained.

  • @bymanshi
    @bymanshi ปีที่แล้ว +1

    thank you so much! great explanation

  • @christinap802
    @christinap802 2 ปีที่แล้ว

    Wow, thank you for this video. Very concise with great explanation for practical use. I appreciate the clean and effective layout and your pacing. By far the most helpful video. The data I'm working with isn't inherently normally distributed and thus I work with it on the log scale for regression purposes. I was unclear as to whether I should take the average before logging or vice versa, but see that I didn't even consider how the geometric mean may be more relevant. In seeing if there was something similar for the geometric median, it seems that that is a whole other can of worms that I should probably ignore for the sake of methodological complexity hahah. Thank you for your work with these videos!

    • @MrPledgerStaysAfterSchool
      @MrPledgerStaysAfterSchool  2 ปีที่แล้ว

      And thank you for the feedback! I really appreciate it! I'm very happy this was helpful for you. If there's anything else I can help with, just let me know

  • @negusuworku1871
    @negusuworku1871 ปีที่แล้ว +1

    Thanks. Very useful.

  • @JJsStudio
    @JJsStudio 6 ปีที่แล้ว +4

    please make more videos

  • @LinusKibet-pd9vd
    @LinusKibet-pd9vd 2 หลายเดือนก่อน

    Thank you!

  • @djcloudy2855
    @djcloudy2855 3 ปีที่แล้ว +3

    Adding more videos can help. More math tutor like. Me❣️❣️❣️

  • @judithchiwayula2443
    @judithchiwayula2443 ปีที่แล้ว +1

    Thanks

  • @djcloudy2855
    @djcloudy2855 3 ปีที่แล้ว +1

    Explanation is very clear.. i understand

    • @MrPledgerStaysAfterSchool
      @MrPledgerStaysAfterSchool  3 ปีที่แล้ว +2

      Thank you, I glad I could help!

    • @djcloudy2855
      @djcloudy2855 3 ปีที่แล้ว +1

      Thanksyou somuch.. its a bighelp

    • @djcloudy2855
      @djcloudy2855 3 ปีที่แล้ว

      Sometimes im very curious regarding square root🤣 sorry to tell about this can you add more and explanation regarding this matter

  • @hassanmohamed1553
    @hassanmohamed1553 3 ปีที่แล้ว +1

    Why Arithemetic mean tends to be greater than goemetric mean while goemetric depends on compounded returns and arithmetic return depends on one time investment ? I cant understand that point can you declare it for me please.

    • @MrPledgerStaysAfterSchool
      @MrPledgerStaysAfterSchool  3 ปีที่แล้ว +1

      The reply to this would take longer than I can fit in the comments, but as long as one of the numbers is positive and none of them is negative, the arithmetic mean is ALWAYS greater than the geometric mean. The Wikipedia page actually has a pretty good proof right at the top. Hope it helps.
      en.wikipedia.org/wiki/Inequality_of_arithmetic_and_geometric_means

  • @IbbiAhmed
    @IbbiAhmed ปีที่แล้ว +1

    Thank u

  • @fransantonio1457
    @fransantonio1457 ปีที่แล้ว +1

    What if my data type contains 5 or 6 numbers?

    • @MrPledgerStaysAfterSchool
      @MrPledgerStaysAfterSchool  ปีที่แล้ว

      Good question. If it contains 5 numbers, you'll multiply them and then take the 5th root. For 6, you'll multiply them and then take the 6th root

  • @fransantonio1457
    @fransantonio1457 ปีที่แล้ว +1

    How can I find the Geometric mean?

    • @MrPledgerStaysAfterSchool
      @MrPledgerStaysAfterSchool  ปีที่แล้ว

      Multiply all the numbers and take the nth root where n is how many numbers you multiply. 2 numbers will be a square root, 3 numbers a cube root, 4 numbers a 4th root and so on

  • @toludada5771
    @toludada5771 3 ปีที่แล้ว +2

    cute

  • @mraxilus
    @mraxilus 10 หลายเดือนก่อน

    What if you have a series of numbers that are increasing over time, hitting some limit (.e.g. race times of an athlete training to get faster)?

    • @MrPledgerStaysAfterSchool
      @MrPledgerStaysAfterSchool  10 หลายเดือนก่อน

      Geometric mean is really used in an exponential system. In your case, the events could go either way. If you consider them independent, then arithmetic mean would be best. If you consider training to be a factor and want to figure something like the average percent improvement, geometric mean would be a good starting point. I have another video that talks about average rates of change that might be helpful