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null hypothesis

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Viewing 14 posts - 1 through 14 (of 14 total)
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  • #52928

    Viti
    Participant

    This is a really simple question, but i am just starting out, so please forgive. If i have a p value of 0.32 and a cut off of 0.05. Do i reject or accept?
    Thanks.

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    #186843

    Rider
    Participant

    I’m going to take a chewing for this, but this data indicate that you should fail to reject the null.

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    #186844

    Viti
    Participant

    Thanks for that ghost rider, for some reason i just cant get that point. Thought i understood it last week, and then it went. Im sure ive got it now. Can finally finish of my research assignment. Jane:)

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    #186845

    Ken Feldman
    Participant

    Jane, how do you know that Ghost Rider gave you the correct answer?  There are many hacks on this Forum and maybe he is one.  Unless you know why he might have given you that response, you don’t know if he is right or wrong.  So, let’s try this….the “cut off” value of .05 as you put it, is the percent risk you are willing take in rejecting the null when you shouldn’t have.  In your case you don’t want to wrongly reject the null when you shouldn’t have only 5 percent of the time.  The p value is your actual risk of wrongly rejecting the null. In your case, your risk of being wrong is 32% if you rejected the null.  Since you are only willing to take the risk up to 5% you better not reject that null.  The easiest way to remember all of this is “if the p is low (relative to your alpha risk) the null must go…if the p is high (relative to your alpha risk) the null must fly”.  On a personal level, never accept an answer on here…except for me…unless you understand the reason for the response.

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    #186860

    Viti
    Participant

    Hi Darth,
    Thanks for that. As you can see i have problems in both area’s. Converting results into a valid analysis.
    Anyway the light has finally come on after your explanation. It suddenly makes sense.
    Thanks again, Jane :)

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    #186874

    Rider
    Participant

    Jane and Darth,I was going out on a limb even providing the response. I’ve been watching my back since. I know how you guys are. I’m shocked, Darth, that you provided such a detailed explanation. Can I take the Scarlet Letter off my head now?Ghost Rider out

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    #186890

    Ken Feldman
    Participant

    GR, there is a difference between giving answers and providing explanations in the hopes that the Poster can then derive their own understanding and answer. The explanations, while often available to the poster who does a little self discovery, can often be confusing. I try to provide simple explanations. That should be one of the roles of this Forum. We are here to help others in the business to learn and understand NOT to dispense answers. Challenge the posters and learning may actually take place. Just my opinion.

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    #186891

    Bower Chiel
    Participant

    Hi  Jane
    You might find the article at http://www.ptjournal.org/cgi/content/full/81/8/1464 of some interest.
    Best Wishes
    Bower Chiel

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    #186895

    Mikel
    Member

    What kind of self discovery do you have in mind?

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    #186896

    Ken Feldman
    Participant

    In the case of Jane, it would have consisted of some serious Googling. In our case in February, where are the best tequila bars is something we will have to discover by ourselves.

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    #186899

    Rider
    Participant

    Sirs,I knew I would get chastised. It is well-deserved. As it stands, and Jane could not have known this at the time, she should not have listened to me at all anyway, if she truly did. I’m an idiot. I troll around the forum to fill the void that envelopes me on a daily basis; nothing more. I search through the mire of posts to find the one or two that actually make sense; from the gurus-you know who you are. I long for the fame that many of you have attained here. I’ll never have it. My intellectual limits preclude such recognition. I should have told Jane to look it up, provided guidance, reassurance, something. As it is, I simply provided a response; I gave her a fish with no thought to how she would catch another. Ghost Rider is out of gas, out of luck, and more likely than not, just plain out.

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    #186901

    Ken Feldman
    Participant

    Your sense of humor alone is worthy of continued participation on the Forum. Please drop in often. Stevo never contributes anything either but we love to hear from him because of his humor, insight and wacky perspective. OK, now I owe him a beer or tequila at the Conference in SoBe.

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    #186903

    GB
    Participant

    and a Tango in the Trump fountain…

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    #186909

    MBBinWI
    Participant

    Seems like nobody took the bait (or Katie is minding the store very closely).  Better luck next time.

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