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  • 1.  Normal and Binomial Calculator

    Posted 09-13-2024 08:58

    Dear ASA Community,

    I am looking a free version of Normal and Binomial Calculators for computing probability and / or percentiles for my intro stat class. If you have any resources for this, please let me know. I would greatly appreciate your help in this regard. 



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    Sincerely,

    Achut Adhikari
    Miami University
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  • 2.  RE: Normal and Binomial Calculator

    Posted 09-13-2024 09:17

    Hello Dr. Adhikari,

    I recently explored Stat Trek calculators that may be useful for the purpose you mentioned. Please refer to the following links to access those:

    https://stattrek.com/online-calculator/normal

    https://stattrek.com/online-calculator/binomial

    Best,

    Nirajan Budhathoki



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    Nirajan Budhathoki
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    Original Message


  • 3.  RE: Normal and Binomial Calculator

    Posted 09-16-2024 10:05

    If you'd like a visual/comparison of the Normal approximation to the binomial, I have a shiny app that shows the relationship:

    https://shiny.stat.ncsu.edu/jbpost2/NormalApproximation/

    You can also add in a continuity correction. Hope this helps!



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    Justin Post
    Associate Teaching Professor
    North Carolina State University
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    Original Message


  • 4.  RE: Normal and Binomial Calculator

    Posted 09-16-2024 11:20

    The Rossman/Chance applet collection has two applets that might fit your needs:

    • One Proportion: You can enter binomial inputs (n, pi) and then check Exact Binomial. You can find P(X = x) and tail probabilities.  For percentiles you can move the red line/change the x value.
    • Normal probability calculator: You can specify mu and sigma and then enter X or Z or prob and it finds the others, one or two tails. You can visually compare to a second distribution but the outputs are for the first.

    If you have any questions about using these, please let me know!

    Thanks,

    Beth



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    Beth Chance
    California Polytechnic State University
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    Original Message


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