chi-square help

  1. P

    Looking for feedback on application of chi-square test

    I am a cost engineer working in the building construction field. I am seeking some advice/feedback on the use of a chi-square test for assessing how well a cost estimate follows an expected distribution. Our organization has developed an empirical collection of the distribution of building...
  2. N

    Discrepancy between Chi-square and sensitivity and specificity

    The performance of 19 impaired and 42 typically developing children was tested using 3 assessment parameters to see which parameter best discriminated between the groups (correctly detected impaired as impaired or typically developing as typically developing). In addition discrimination function...
  3. S

    SPSS: Which chi-square test should I use for one nominal and one ordinal variable?

    My hypothesis is Gender and opinion on smoking is associated. I am using a likert scale (Strongly disagree..strongly agree) for the statement 'Smoking makes you look cool'. In SPSS, I have coded gender as nominal and the opinion as ordinal. I have to use a chi-square test but dont which box...
  4. wellfor

    Is it correct to use chi-square test here? Quick reply highly appreciated!

    Dear colleagues, very quick and brief advice is highly appreciated! I am about to finish work and have only one hesitation. Situation: 1) In observational study there are 3 groups (according to diagnosis). 2) All patients were also divided into two groups based on scale score. (Please...
  5. C

    Chi-Squared Help

    I am working on a homework set and I am very confused on this question...Can someone help me understand? What's wrong with this statement? Chi-square analysis will tell us whether two qualitative variables are correlated. 1.There is no statistical test for the correlation between two...
  6. S

    chi-square and multiple testing

    Hi, I want to compare survey responses for a particular survey questions between one year and the next - to see if there is a statistically significant difference in the % agreeing between one year and the next Year - 2012 or 2013 ( explanatory variable) Response - Agree or Not Agree...
  7. E

    Chi squared Test

    Hello, I have the following data set: Watersheds: 0 1 2 3 Autism: 10 4 1 0 15 Total: 213 146 25 24 408 The data represents search and rescue cases and how many watersheds away people are usually...
  8. M

    Chi squared troubles

    Okay, so i have been given an assignment in uni were they give us a set of data and we have to write up a scientific report. I have to perform a chi square test on the results in the hopefully attached table. I'm unsure about a couple of things: 1. Are my expected results obtained by using...
  9. K

    HELP!!! Chi-Square Tests

    What is the difference between Homogeneity of proportions across two or more groups, Test of independence, and Goodness of fit test? Also, how would you know which test was used if all you are given is X-squared=31.3695, df=2, p-value=1.542e-07? And based on those outputs, how do you...
  10. G

    Chi Square Test For Independence with Likert Scale

    Hello, I would like to do a Chi square test for independence with a Likert scale to see if there are any associations in gender and education level with regards to ethical consumption. Each question of my likert scale has 5 categories (definitely wouldn't buy it, wouldn't buy it, might buy...
  11. S

    STATA HELP - How can I tell if the percentages are different statistically?

    Hi, I am trying to compare the percentage of students in reading, math and science (by school, and by subject). My table looks like this. reading math science School A 20% 20.6% 19.4% School B 28.9% 28.3% 25% School C 25% 7.7% 44% School D 15.2%...