Probabilities in a Normal Distribution - TI-84

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  • เผยแพร่เมื่อ 2 ธ.ค. 2024

ความคิดเห็น • 44

  • @WLJonesMusic
    @WLJonesMusic ปีที่แล้ว +5

    You are making a difficult subject very manageable. I've never done well in a math class in my life and I currently have a 96.7 average. Long way to go but I'm still amazed. Your videos are a godsend for sure!

  • @qwill1998
    @qwill1998 4 ปีที่แล้ว +24

    You are a Godsend. You are responsible for my 91% on my Chapter 3 test covering Normal Distributions! Thank you.

  • @susanford2937
    @susanford2937 3 ปีที่แล้ว +1

    Finally - someone who is showing what I should do when my calculator is slightly different. Also thanks for spoon feeding me how to get the correct "E" for Eulers entered. That was making me cray-cray. You saved me!

    • @MathandStatsHelp
      @MathandStatsHelp  3 ปีที่แล้ว

      Glad the video helped! I try to make it as easy to understand as possible!

  • @kylapolee3839
    @kylapolee3839 3 ปีที่แล้ว +3

    Thank you for show us the written explanations as well. Thank you so much for putting the work in for these videos!!! I wish my professor was as good as you when it comes to explaining the math.

  • @keepin2480
    @keepin2480 4 ปีที่แล้ว +3

    Awesome video, you took me from spending 3hrs on 2 questions to next to 10 mins to finish the assignment, all i can say is i wish you were my teacher...

  • @Dude_its_Dan
    @Dude_its_Dan 2 ปีที่แล้ว

    My favorite TH-camr for explaining statistic concepts.

  • @helenallen4467
    @helenallen4467 4 ปีที่แล้ว +1

    Excellent, clear video. I now look at your statistics videos first! Thank you.

  • @vadimmanevich3751
    @vadimmanevich3751 2 ปีที่แล้ว +1

    Thank you so much, it really helps. I always get confused on this topic.

  • @vadimmanevich3751
    @vadimmanevich3751 2 ปีที่แล้ว +1

    you can also type -999 and just 999 for the negative infinity and positive infinity

  • @anniellealvarez9188
    @anniellealvarez9188 2 ปีที่แล้ว +1

    Does anyone know how to do it, if it says greater than or equal to? I've been searching for days and people only explain the basics.

    • @MathandStatsHelp
      @MathandStatsHelp  2 ปีที่แล้ว +1

      You would do the same thing as greater than, because it's a continuous distribution and technically something like 1.00000001>1, and there would be a negligible difference in the areas above.

  • @oliviagardner2469
    @oliviagardner2469 4 ปีที่แล้ว +1

    THANK YOU SO MUCH!

  • @kare917
    @kare917 11 หลายเดือนก่อน

    Thank you so much ❤

  • @منوعاتفيلومينا
    @منوعاتفيلومينا 3 ปีที่แล้ว +1

    Thanks that vedio made my day

  • @juliabatrisyiaabdrazak9608
    @juliabatrisyiaabdrazak9608 4 ปีที่แล้ว +1

    where to find apps or software for the calculator? mind share the link thankyou

  • @richardbutoncatipayjr.5796
    @richardbutoncatipayjr.5796 4 ปีที่แล้ว +1

    It possible to get the link of ur calculator u used ma'am . Or APK.. tnx..

    • @MathandStatsHelp
      @MathandStatsHelp  4 ปีที่แล้ว

      Just search for TI-84 computer software. Texas instruments sells it.

  • @playgroundfriend
    @playgroundfriend 29 วันที่ผ่านมา

    Thank you...

  • @paulcostinett886
    @paulcostinett886 3 ปีที่แล้ว

    What are the steps to graph this using the TI-84?

    • @MathandStatsHelp
      @MathandStatsHelp  3 ปีที่แล้ว

      After entering the data in L1 and L2, hit 2nd y=, 1:StatPlot1, select the histogram, make sure x-list is L1 and Frequency List is L2, hit Zoom, I think it's 9:Stat, and the graph should show up..... I'm going off memory and don't have a calculator handy, so I think I covered everything.....

  • @layanjabr436
    @layanjabr436 5 ปีที่แล้ว

    I'm stuck on something that is driving me nuts, please help me, The question says X follows N(503,1.6^2)
    and asks to find P(X>505) so I clicked 2ND > VARS > normalcdf > lower: 505 upper: e99 mean:503 std deviation: 1.6 then I clicked enter
    and I got a negative probability.
    Why am I getting a -ve probability ?

    • @MathandStatsHelp
      @MathandStatsHelp  5 ปีที่แล้ว

      Did you use the EE button by hitting 2nd , (comma button is above the 7) for the 1E99?

    • @layanjabr436
      @layanjabr436 5 ปีที่แล้ว

      @@MathandStatsHelp no :( I used the e above the divide sign. I did 2nd then divide then I clicked on 9 twice

    • @MathandStatsHelp
      @MathandStatsHelp  5 ปีที่แล้ว

      That's what is causing the problem. The value is less than 505, so it gave the negative probability. That e is Euler's number.

    • @layanjabr436
      @layanjabr436 5 ปีที่แล้ว

      @@MathandStatsHelp Oh, so to avoid that problem, should I just go with 9999 all the time or sth ?

    • @layanjabr436
      @layanjabr436 5 ปีที่แล้ว

      or am I supposed to use the E above the 7 ?

  • @shondalenaevans5690
    @shondalenaevans5690 ปีที่แล้ว

    I wish that the
    functions worked for me 😮‍💨

    • @MathandStatsHelp
      @MathandStatsHelp  ปีที่แล้ว

      Are you hitting the subtraction button instead of the negative? It will give an error for that.

  • @cansuyu19
    @cansuyu19 4 ปีที่แล้ว +1

    I really wonder about the teacher.Could you show your face once only please?

    • @MathandStatsHelp
      @MathandStatsHelp  4 ปีที่แล้ว +2

      Sorry, I don't like being on camera. 🙂

    • @oscarstill909
      @oscarstill909 4 ปีที่แล้ว +1

      @@MathandStatsHelp why is this??? Are you being anonymous to the public and the private eye of TH-cam™️©️®️❔❔❔

    • @oscarstill909
      @oscarstill909 4 ปีที่แล้ว +1

      @@MathandStatsHelp if you can’t bear the brunt of being on a Camera you could AT LEAST show your face once and only on your FB, Instagram and linked in page.

    • @andrewnixon4469
      @andrewnixon4469 3 ปีที่แล้ว +2

      @@oscarstill909 Dude, don't be such a creep she's just teaching math lol