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    Any statisticians out here please? 50 voucher offer




    I am doing a survey as part of my MSc project and need someone to review the protocol from a stats point of view, including helping to determine the sample size I need, helping with data analysis etc. Any one who is Stats graduate and can help with my study please? 50 voucher of your choice on completion of the project. Many thanks!

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    Re: Any statisticians out here please? 50 voucher offer

    Posters won't respond to offers of cash. If you list specifically what you want to know they will answer your questions if they know it.
    "Very few theories have been abandoned because they were found to be invalid on the basis of empirical evidence...." Spanos, 1995

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    Re: Any statisticians out here please? 50 voucher offer

    http://www.youtube.com/watch?v=6ktvE2vfxSQ&t=90

    I'll take any money if he's giving it away.
    Last edited by Injektilo; 08-11-2014 at 04:50 PM.

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    Re: Any statisticians out here please? 50 voucher offer

    haha last response was funny.

    1. How on earth do I work out my sample size? I found a calculator online but I got stuck when it asked me to input the confidence interval!
    2. Once the questionnaires come in, what software is available to help me analyse the data. Is there free software for this?

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    Re: Any statisticians out here please? 50 voucher offer

    1. Put in 95%, as that is the norm.
    2. Yes, but you'll likely need some time to get acquainted with it. If it's very simple stuff, Excel will suffice. Otherwise, you may have to look at PSPP (an freeware version of SPSS), or if you dare, R.

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    Re: Any statisticians out here please? 50 voucher offer

    Quote Originally Posted by Injektilo View Post
    1. Put in 95%, as that is the norm.
    2. Yes, but you'll likely need some time to get acquainted with it. If it's very simple stuff, Excel will suffice. Otherwise, you may have to look at PSPP (an freeware version of SPSS), or if you dare, R.
    Hi no, it is asking for confidence INTERVAL. I did select 95 for the confidence level. Also what does the bolded mean?

    oh and Excel will not suffice as I need t-tests etc

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    Re: Any statisticians out here please? 50 voucher offer

    Excel does t-tests. A t-test is one of the most basic tests around.
    I don't have emotions and sometimes that makes me very sad.

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    Re: Any statisticians out here please? 50 voucher offer

    Quote Originally Posted by brownbabygirl View Post
    I am doing a survey as part of my MSc project and need someone to review the protocol from a stats point of view, including helping to determine the sample size I need, helping with data analysis etc. Any one who is Stats graduate and can help with my study please? 50 voucher of your choice on completion of the project. Many thanks!
    @brownbabygirl,
    You do the right thing in that you want to get in touch with and talk to a statistician. You also do it right in that you show a willingness to pay for the service the statistician can do for you. (A messy study can be changed to a clear cut study, if planned correct from the start.) If you, your supervisor and your department start a long run cooperation with a statistician, that can turn out to be one of the best investments you have ever made.

    Although 50 might be a lot for a student, it is not very much as a consultancy fee. How much would you have to pay for a craftsman for a few hours of work in your country? At TalkStats we usually don't take money.

    Sample size?
    One way is to use "mean +/- margin of error" like in:

    mean +/- 2*s/sqrt(n)

    where s is the standard deviation and n is the sample size. Guess a value of s. Increase n until the margin of error is acceptable small.

    Good luck!

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    Re: Any statisticians out here please? 50 voucher offer

    Quote Originally Posted by GretaGarbo View Post
    @brownbabygirl,
    You do the right thing in that you want to get in touch with and talk to a statistician. You also do it right in that you show a willingness to pay for the service the statistician can do for you. (A messy study can be changed to a clear cut study, if planned correct from the start.) If you, your supervisor and your department start a long run cooperation with a statistician, that can turn out to be one of the best investments you have ever made.



    Although 50 might be a lot for a student, it is not very much as a consultancy fee. How much would you have to pay for a craftsman for a few hours of work in your country? At TalkStats we usually don't take money.

    Sample size?
    One way is to use "mean +/- margin of error" like in:

    mean +/- 2*s/sqrt(n)

    where s is the standard deviation and n is the sample size. Guess a value of s. Increase n until the margin of error is acceptable small.

    Good luck!

    Hi GG! thanks for this! actually i am now in touch with a consultancy that specifically deal with this sort of thing (biostats help with dissertation). previously did not know they existed.

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    Re: Any statisticians out here please? 50 voucher offer

    Quote Originally Posted by Dason View Post
    Excel does t-tests. A t-test is one of the most basic tests around.
    I'd bet it's not just "one" of the most basic tests around, I would guess it is the most used and misused tests around.

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    Re: Any statisticians out here please? 50 voucher offer

    Quote Originally Posted by Englund View Post
    I'd bet it's not just "one" of the most basic tests around, I would guess it is the most used and misused tests around.
    ...and Chi is its archrival...

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    Re: Any statisticians out here please? 50 voucher offer

    fees that the stats consultancy are looking for made my eyes water. it is actually much more than the fees for the masters lol. there is a formula online but i dont want to risk it but i might need to. i may be making a bigger issue of this that necessary

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    Re: Any statisticians out here please? 50 voucher offer

    Quote Originally Posted by GretaGarbo View Post
    Sample size?
    One way is to use "mean +/- margin of error" like in:

    mean +/- 2*s/sqrt(n)

    where s is the standard deviation and n is the sample size. Guess a value of s. Increase n until the margin of error is acceptable small.

    Good luck!
    sorry this makes sense if you are a statistician or have basic grounding but i am thinking huh. just need someone to break it down for me :-(

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    Re: Any statisticians out here please? 50 voucher offer

    Quote Originally Posted by brownbabygirl View Post
    sorry this makes sense if you are a statistician or have basic grounding but i am thinking huh. just need someone to break it down for me :-(

    i thought you had already contacted an expert to help you wade through the statistical waters?!?
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    Re: Any statisticians out here please? 50 voucher offer


    Sample size?
    One way is to use "mean +/- margin of error" like in:

    mean +/- 2*s/sqrt(n)

    where s is the standard deviation and n is the sample size. Guess a value of s. Increase n until the margin of error is acceptable small.
    What is it that you find difficult?

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