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    Null hypothesis reject H0 conclusion

    Please help me answer this question F=13.2 P= 0.003 what is tested reject H0? conclusions:
  3. J

    Determining how similar different sets of data are

    I hope this is in the right spot: I have a dataset of ~15,000 unique, nominal, categorical members. From that dataset, I have ~3,000 samples that are subsets of the overall dataset. Each sample has 100 unique members. A member's inclusion in a sample/subset is binary: either it is fully...
  4. J

    Testing association between categorical independent and ordinal dependent variable

    Hello. I would like some insight into an association test I can do for a categorical variable - Vendor (GE, Siemens, Philips, etc) and how this factor may affect the outcomes (ordinal scores from 0 to 10) of the performance of an algorithm on the images produced by these machines? Does anyone...
  5. A

    Spearman's rho or no? is one of my datasets non-monotonic?

    Hi, I'm dyslexic with limited stat education (and the internet is not helping thus far) and I'm having horrible trouble understanding what tests I can and cannot use for potentially non-monotonic data (brain, meet brick wall...). This is for my dissertation (social sciences), and I'm questioning...
  6. M

    Which test to use for these variables and their associations

    Hey, I have some questions about which test I can or have to use. Which test do I use to only identify if there is a relationship between those variables? I only want that to know, for the identification of confounding factors. Ordinal dependent categorical variable <-> ordinal...
  7. F

    How do I optimzie association analysis for the rules to make sense?

    I have a dataset of customers, that I want to define a frequent criteria, to paint a picture of an ideal customer. The dataset has the following fields: -email -fullname -Job (title) -company web domain -company description (string data) -company founded (year) -company employees (number)...
  8. S

    Good model for association of for prediction?

    Hello everybody, I have a "conceptual issue": I have been told that the program that performs best in finding a lot of feature associated to a phenotype of interest will not perform best for predicting the phenotype of interest out of the features, and vice-versa. I do not quite understand...
  9. R

    Measuring association between an ordinal variable and presence or absence of an event

    Hi everyone, I have done a research project measuring the severity of tortuosity of iliac arteries in patients who underwent EVAR (Endo Vascular Aneurysm Repair), graded it into None, mild , moderate and severe. i am trying to assess the association between severity of tortuosity and adverse...
  10. A

    Dependance between categorical variables in a whole population

    Hello, I have a population of 507 documents (which represent the entire phenomena studied at a give time period) from which a series of variables -most of which are nominal- where extracted. The end goal was to describe said phenomena and establish the possibility that the outcome is...
  11. J

    direction of association between nominal and ordinal variables

    Hello, I have a question about which test are appropriate to find direction of association between a nominal and an ordinal variable. I have 2 kinds of participants (A and B), each of them answered a few questions with an answer on a scale from 0-7. The sample size is quite small so I...
  12. T

    Test of proportions; study design and sample size

    I want to look to see if there is an association between two conditions. Basically, patients come into dermatology and complain of an itch between their shoulder blades and are diagnosed with this thing called "NP". I believe the itch may be due to a muscle/skeletal imbalance hence something...
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    Association btw. dichotomous and ordinal variables, controlling for dichotomous var.

    Hi y'all! I've got three variables: A (3-category ordinal), B (dichotomous), C (dichotomous). Any ideas on how to find a measure of association between A and B, while controlling/covarying for C? I'm currently dropping everything into the partial correlation procedure in SPSS, which I'm...