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  1. galegirly

    Relationships in categorical data

    Thank you karabiner. That gives me a ball park to work in. I think I will create some mock data and see were those ideas take me. I guess we could increase the number of case scenarios, from 4, to a number that offers a more reliable insight. There is probably a statistical method of choosing...
  2. galegirly

    Relationships in categorical data

    Yes sorry to spring that on you, we have researchers from 5 countries involved. OK Perhaps this will explain further - data for an individual study participant will look like this So, as you can see, they will respond to 4 case studies. Your questions have prompted me to tighten up the...
  3. galegirly

    Relationships in categorical data

    Karabiner if we force participants to split the importance they attach to each of 5 information sources your suggestion to report ranks is no longer applicable, is that right? You said "one could focus on decisions and show the median ranks of each information type, separately for each decision...
  4. galegirly

    Relationships in categorical data

    Yes, thank you Karabiner. Ranking in the way i have suggested is crude. We could set it up so that participants can assign an actual % to each info source. Participants won't want to work out percentages, but we could allow them to apportion a pie chart in a survey application. That would make...
  5. galegirly

    Relationships in categorical data

    Thanks Katxt. please see above where i have turned into an example. The type of conclusions we would forsee: practitioners who choose the riskiest intervention (intervention 1 or whatever) are significantly more likely to have used professional intuition (Info C, or whatever) to inform their...
  6. galegirly

    Relationships in categorical data

    Thanks Karabiner and katxt. Well we are working on the protocol at the moment, so no real data yet, but we do want to have a viable plan for statistical analysis before we start. So, what if we structured it like this? 200 study participants read a case scenario (lets make them hair-dressers...
  7. galegirly

    Relationships in categorical data

    I have 200 health practitioners choosing one of six treatments after reading a case study. Then i ask them what info from the case study did they use to make their decision - info A, B, C, D or E (they can choose more than one). Is there a relationship between choosing any of the treatments, and...
  8. galegirly

    What statistic method should I use for this situation?

    Maybe you are trying to do too much at the same time here. What about finding out if there is a significant difference between A, B and Cs 'number of transmissions' first. Karabiner or someone will be able to correct me, but i'm thinking a chi-squared for multiple samples - more info here -...
  9. galegirly

    What statistic method should I use for this situation?

    It looks like 2 outcomes to me. Possibly 2 studies. Possibly some value in considering a categorical analysis? I might have a proper think later - having breakfast!
  10. galegirly

    What statistic method should I use for this situation?

    It looks like 2 outcomes to me. Possibly 2 studies. Possibly some value in considering a categorical analysis? I might have a proper think later - having breakfast!
  11. galegirly

    What statistic method should I use for this situation?

    What about a correlational analysis (sorry, probably distracting you with my psychology analogy). If A has 10 performance data points, and, say 10 electric surge data points, and 10 amplitude points ... can you give us a better understanding of what the data looks like?
  12. galegirly

    What statistic method should I use for this situation?

    I think i am understanding you correctly -you are saying you can't test ABandC in the exact same way - which is a bit like not have 3 nicely random samples to test your psychology intervention on - when this happens in psychology we still do the evaluation we just call it quasi-experimental -...
  13. galegirly

    How to estimate population statistics for each category ?

    Is what Harsh is describing here not the very basics of survey data statistical analysis. We group respondents into categories using their answers, and infer that the resultant proportions in each category are a reflection of the true make-up of the entire population - and we put some caveats on...
  14. galegirly

    What statistic method should I use for this situation?

    So - putting this in psychology terms - A,B, and C are 3 different interventions. We want to know which performs best. But you cant find comparable samples to test them on?
  15. galegirly

    what type of statistical analysis would you apply?

    I am a teacher. I've done pre and post intervention testing with a group (n=17) of pupils. I also did the same tests with another group (n=17) who had no intervention, they just had business-as-usual teaching. Whats the first thing you would do - compare the initial test scores for the two...