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Math Help - Simple statistics

  1. #1
    Newbie
    Joined
    Sep 2009
    Posts
    1

    Unhappy Simple statistics

    Hi,

    I have a question and I really hope that you can help me.

    A couple of days ago I received response to a questionnaire I've mailed to 6 categories of people.

    Not all people in each category answered the questionnaire, and now I would like to know if one group responded significantly less, than the other groups.

    The answers in percent for each group is:

    65 %
    55 %
    50 %
    50 %
    40 %
    30 %

    Is it possible to do some statistical calculations on this?

    I really hope that you can help me.
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  2. #2
    Super Member
    Joined
    Jan 2009
    Posts
    591
    Quote Originally Posted by JNelson View Post
    Hi,

    I have a question and I really hope that you can help me.

    A couple of days ago I received response to a questionnaire I've mailed to 6 categories of people.

    Not all people in each category answered the questionnaire, and now I would like to know if one group responded significantly less, than the other groups.

    The answers in percent for each group is:

    65 %
    55 %
    50 %
    50 %
    40 %
    30 %

    Is it possible to do some statistical calculations on this?

    I really hope that you can help me.
    Yes

    If you sent the same number of questionaires to each group, then the mean response was 48% (approx).

    You can calc the variance & determine the standard deviation.

    What level of significance are you looking for?
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