Psychology

posted by .

Describe the chi-square goodness-of-fit test.

  • Psychology -

    http://www.stat.yale.edu/Courses/1997-98/101/chigf.htm

  • Psychology -

    If you cannot understand the above site, possibly this might help.


    Use the Chi-square (X^2) method.

    X^2 = ∑ (O-E)^2/E, where O = observed frequency and E = expected frequency.

    ∑ = sum of all the cells.

    E = (column total * row total)/grand total

    df = n - 1, where n = number of cells

    Look up value in X^2 table in the back of your textbook.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Statistics

    In a particular chi-square goodness-of-fit test there are four categories and 200 observations. The significiance level is 0.05. How many degrees of freedom are there?
  2. Stats (Chi-Square)

    Suppose you have a chi-squars GOF test to test null hypothesis that the age distribution of drivers stopped in 2003 for traffic violations is the same as the age distr. in 2002. You compute chi-square= 14.7. At the 5% significance …
  3. Statistics

    True or False 1. Chi square tests of independence and homogeneity are both usually right-tailed tests. 2. A chi square goodness-of-fit test is appropriate for determining whether a random number generator is truly random.
  4. math

    Q:The table below shows a distribution and the observed frequencies of the values of a variable from a simple random sample of a population. Perform a chi-square goodness-of-fit test, at the specified significance level, to decide …
  5. Statistics/Chi Square

    I have a question to do in which the efficacy of a drug used to treat panic disorder is tested. Patients are given a placebo for one week and then the drug for one week, and the number of panic attacks is measured for each week. The …
  6. Statistic

    In chi square goodness of fit test, if the expected frequencies, and the observed frequencies were quite different, we could conclude that: A) null hypothesis is false, and we would reject B) chi square distribution is invalid, and …
  7. Statistics (Please help!!!)

    Here is the question: If gene frequencies are in equilibrium, the genotypes, AA, Aa, and aa occur in a population with frequencies (1-0)^2, 20 (1-0), and 0^2. Plato et al.published the following data on haptoglobin type in a sample …
  8. Psychology

    Can you give a real world example of when you would use a chi-square test of independence and a chi-square goodness of fit?
  9. Math

    RD – z, t, or Chi-Square Test Study Background During this week you will work in your group discussion area to identify a research question created in week 1 that would utilize any of the following: z test, t test for single sample, …
  10. Math

    RD – z, t, or Chi-Square Test Study Background During this week you will work in your group discussion area to identify a research question created in week 1 that would utilize any of the following: z test, t test for single sample, …

More Similar Questions