Chi square analyses (PSY 365)

2009 June 2
by Christopher H. Ramey, Ph.D.

spssHello. Your homework is available as a downloadable PDF in Comment #1.

Please make sure to post any questions you may have on the blog. Sean and I are always happy to help.

from → Homework, statistics

7 Responses
  1. 2009 June 2
    Christopher H. Ramey, Ph.D. permalink

    Please download your homework. It is due promptly at the beginning of class on Thursday.

  2. 2009 June 2
    dp443 permalink

    I am a little unclear as to what data we are supposed to enter into SPSS.
    0 501 times and 1 499 times? If it is from the example in class, I cant remember the
    number of “subjects” that were used.

    Thank you

    Dominique Pratel PSYCH 364 8AM

  3. 2009 June 3
    Ashley permalink

    I have two questions:

    1. I do not understand what the question “What do these numbers mean?” means in terms of the mean and standard deviation.

    2. When reporting the observed and expected values, do we report them with decimal places also? For example reporting the number 5 as 5.00.

    Thanks!

    Ashley Bathgate, PSY 365

    • 2009 June 3
      Christopher H. Ramey, Ph.D. permalink

      hi, ashley.

      1. I do not understand what the question “What do these numbers mean?” means in terms of the mean and standard deviation.

      so, spss can calculate means and standard deviations on any set of data, for example, a distribution of SAT scores or GPAs, etc.
      i had you guys make spss calculate means and standard deviations on the distribution of coded coin tosses. i want you to tell me what those descriptive statistics (M and SD) correspond to when we are dealing with the data of this chi square analysis.

      2. When reporting the observed and expected values, do we report them with decimal places also? For example reporting the number 5 as 5.00.

      good question. this is a case where decimals don’t make a lot of sense, so you can avoid them. the real question is why don’t decimals make sense with these data, that is, data of this kind?

  4. 2009 June 3
    nadiafernand permalink

    Regarding Ashley’s question, I am still confused as to what the mean and standard deviation tell us. Is there anyway you could further elaborate on this question without giving the answer?

    Nadia Fernand, PSY 365

    • 2009 June 3
      Christopher H. Ramey, Ph.D. permalink

      giving away the answer makes the responses difficult to this particular question. working for the answer is the real lesson here.

      nadia, think about how means and standard deviations are calculated. think about the data being used in our problem that you have entered into spss. ask yourself what you have just gotten spss to calculate.

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