analysis

  1. S

    PyCM : New statistical analysis library for post classification in Python

    A classifier is expected to face with many datasets with different characteristics such as being unbalanced. Besides, their missions are different, for example, categorizing data into just two classes or more than two. There are many different parameters for evaluating the performance of a...
  2. A

    Advice on methodology and analysis, regression.

    Dear all, For my Master’s thesis, I have some difficulties with the statistical part of my research. I want to analyze the relationship between two variables: Investment in Innovation (R&D) --> Concentration Ratio 1. Research & Development (R&D) Investments in an industry 2. Concentration...
  3. J

    ? Correct research analysis

    Hello I am currently applying for research ethics for a project however i cannot get my head around the correct statistical analysis for my project The problem i am trying to answer is that there are several reference values to score a participants breathing test score against. I am...
  4. H

    Multiple regression multigroup analysis in Amos

    I am testing the hypothesised effect in a model using SEM A -> B between two groups. The results of the standardised path coefficients (SPC) are Group 1: spc = 0.334 p < 0.001; Group 2: spc = 0.316 p = 0.181. I would have expected the effect of group 2 to be also significant although it is...
  5. M

    Choosing the correct analysis

    Hi everyone, Really needing help with choosing the right analysis for my variables. Background: I'm looking at the difference in amplitude for reaction times of negative, positive, and neutral words. The IV: reaction times (negative, positive, neutral words) The DV: amplitude...
  6. T

    I need help with my regression analysis for research capstone.

    Hi all, I'm new to regressions and also new to posting here. My topic is: How have E-books Affected College Textbook Prices? My hypothesis is: H0: The CPI for college textbooks will fall with the introduction of the e-book because increased innovation and competition causes an...
  7. T

    Which test should I use? (Questionnaire analysis)

    Dear all I just received all questionnaire responses but I am not sure which test is the best for analyzing the data. The questionnaires were distributed to two groups, one is for successful candidates; another one is for the unsuccessful candidates. Most of the data is nominal, and my...
  8. T

    Regression for comparing two groups on one variable? And t-test with survey data?

    Hi - I have two populations / groups that I need to compare on one variable. Now usually I would use a t-test or anova but ive been told that these are unable to be used with survey data in stata. Is this correct advice - can I not use a t-test or anova in stata with survey data? And would a...
  9. V

    repeated cross sectional-partially changed study population

    I have a large dataset (n=11804) that includes data from a cross sectional study conducted in 2013, 2014 and 2015 in patients in nursing homes...so its 'repeated cross sectional', right? However, some patients participated more than once, so in 2013 and 2014 or 2014 and 2015 or all 3 years...but...
  10. H

    Analysis

    The list of items that comprise the universe selected for analysis and is used in determining which items will be selected is called ________
  11. T

    Correct analysis of crossover trials

    Hi everybody I was wondering if anyone here had any expertise regarding analysis of crossover trials. I'm writing my thesis at the moment and was reading through an article that is considered central to my field. It's a cross-over clinical trial with one placebo and one active treatment...
  12. M

    Survey item analysis, two ways to report low rated items. Is my friend wrong?

    My friend and I analyzed the same data but came up with two different sets of results :shakehead . I'd like help to understand why. Situation: We each used the same data, which came from a questionnaire of 100 items, each positively worded (e.g., "This is a great place to work"). The 5...
  13. S

    ANCOVA assmptions not met.

    Hi, What is the non parametric alternative for parametric ANCOVA if we find that some ANCOVA assumptions are not met? How it can be done in SAS?
  14. L

    Way to pick apart Discriminant Function Analysis?

    Hi there, I'm new to the site, this is my first post! I've run a discriminant function analysis by entering syntax into SPSS. My data consists of sets of fish separated by species, and each species group has individuals ranging from 4 to 53 specimens. I have my output which is showing me...
  15. T

    Please help! Should i use a Mixed ANOVA?

    I am struggling on which type of ANOVA to use for my work, I will provide as many details below about the study design, at the moment I am thinking mixed ANOVA but im encountering some problems which suggest that I have chosen the wrong type. I have two groups, one with a particular defect...
  16. T

    What statistical test should I use.

    So I am writing a report on whether mean intelligence through an IQ test and mean psychopathy scores (DV) are significant in different types of crime committed by criminals (IV) and I have 9 categories of crimes, I want to compare the mean scores of the DV's in each of the crime categories.
  17. A

    Alternative for a multi-level analysis

    Hi all, For my criminology thesis I am analysing police interviews and would like to research the effect (the presence of) an attorney has on whether or not a suspect gives a statement. The statement will be a dichotomous variable (0 = remaining silent 1 = giving a statement). My data is nested...
  18. H

    Repeated measures design - correct analyses and GLM assumptions

    Hi all, I have collected data for a study but I am not sure now if I am carrying out the correct analyses. I have tried for the last few days to figure out whether my analyses are correct, but I keep getting a lingering doubt that they are not and so I thought I will ask this question because...
  19. R

    Descriptive Statistics

    You are conducting a 2(gender) x 2(treatment group) analysis to study smoking as an outcome variable (yes,no). At the very least, what kind of descriptive statistics mentioned below, would you provide in a table after testing the association between smoking status and gender or treatment group...
  20. M

    Which Statistical Analysis would I use?

    I am writing a fake study. In the study there are 3 groups which correspond to times. (1:00pm, 2:00pm and 3:00pm) The participants took a "cognitive enhancing drug" at these time intervals and I am trying to assess which time is the most effective. Performance measures were taken (4...