statistic test

  1. S

    Non-parametric test with confounding factors (many covariates)

    First, sorry for my English, if I'm not clear enough, tell me! In my project, I have many variables but a very small sample (non-parametric). I'm trying to prove a link between two variables while correcting for covariates. In short, we are looking at white matter tracts and their links to...
  2. M

    What tests to use for analyzing data that is categorical and continuous

    Hey everyone, for my master thesis, I'm analyzing a bunch of patient data. I have very limited statistical experience hence the question here. The data set includes both categorical variables and continuous variables. the continuous variables don't seem to be normally distributed...
  3. consumerisms

    What statistical analysis and how?

    Hello everyone, I am studying the effects of framing on food neophobia and the purchase likelihood of novel foods. Currently, I have made a pre-test where I have 4 conditions and 1 control condition where they are pictures with messages framed a certain way (emotion-promotion...
  4. M

    Which statistical test?

    Which test can I use for analyzing the effect of a categorical independent variable, such as preoperative ASA score (1/2/3/4), on a binary dependent variable, such as postoperative complication (yes/no)? I know that the chi squared test is an option, but this test does not tell me if the...
  5. B

    What Statistical Designs should I use?

    Hi! We're making a Design of Experiment that involves the use of rubber band and egg shell to see of it affect compression strength of a concrete. So, we make a proportion of the cement and two control variables in interval like 1. 100:0:0 2. 50: 50 :0 3. 50: 0: 50 4. 50: 25: 25 5. 50: 75...
  6. I

    Problem on Tests on mean and variance

    I need some help. It is a problem from a book called Theory of Multivariate Statistics, by Martin Bilodeau and David Brenner. It is from unit 8 (Tests on mean and variance), problem 14. Does anybody know this :)?
  7. A

    help identifying name of statistic, logistic regression

    Hello, This is probably a very basic question, but I'm wanting to identify the name of a statistic. A professor I consulted with had written out the formula for me (attached) and I had thought this was a z-score, but she said at some point that it's not, it's another kind of statistic. She is...
  8. P

    Anova test post-hoc error

    Dear All, Please help me with my statistics... I am using 5 different dimensions to interpret the correlation among them. For instance, Burnout is negatively related to engagement. All dimensions have at least 3 Lickert scale data. Now, I would interpret the analysis among them, trying with...
  9. H

    small sample size problems

    Hi i'm doing my master thesis and i'm searching for a way to analyse differences with small samples. The smallest is n=4 (1vs 3). Is there an option to analyse potential significant differences with this small samples? I don't think so but i'm pretty new in statistics, so i would be glad to...
  10. R

    Normality test: missing p value for some variables

    Hi! I am trying to run normality test for 3 variables and I am just getting p value for one of them. Has someone faced this problem before? Thank you for the help!
  11. D

    Stattistical test for multiple reponses

    Hi to everyone, I ran a survey and one question was to indicate which accommodation (hotels, apartment, b&b, ...) respondents prefer when travelling. Thery were allowed to select more than one option. The survey was completed by two different groups: university students and workers aged 25-35...
  12. J

    Statistical tests for SPSS - which is the most appropriate?

    I'm a little confused on what statistical test(s) I should use in SPSS, and hope that someone could enlighten me. Research is looking into the relationship between breed size and how an owner manages certain behavioural problems. A questionnaire has been used to collect behavioural data from...
  13. N

    Hypothesis analysis for mouse growth

    I have the mouse growth data as shown below. There are two cages. Cage-1 has 'type-A' mouse and Cage-2 has 'Type-B' mouse. Each cage has 4 mouses. Every week each mouse weight and total food consumption per cage are recorded. I want to do the hypothesis testing and find which type of mouse...
  14. J

    Statistical Tests

    I am currently completing my dissertation and I need to compare some wave data. I have the forecast wave heights and the actual wave heights. I need to find how accurate the forecast wave heights were and therefore need the correct statistical test or multiple! Thank you, Jess
  15. R

    Which Statistical test is it?

    Any chance anyone knows the answer to this? I know it's not paired t-test but don't know which of the others it is A hotel manager would like to test whether the average time taken for customers to complete the hotel's online booking form is less than 5 minutes. She selects a sample of 40...
  16. M

    Forward selection of non significant variables

    Hi, In SAS Enterprise Miner, I trained a logistic regression with forward selection and AIC criteria. I grouped rare levels for categorical variables. One of these variables was selected by the algorithm but the coefficients of all categories were statistically not significant (different...
  17. V

    2 Sample Distribute

    ROA is an indicator how profitable a company Is relative to its assets. Note: I know I haven't given the dataset.
  18. S

    Mann-Kendall - Data

    Dear Everyone, I am currently use Mann-Kendall Test to test on Stream Flow. I would like to ask, Is there any rule or minimum requirement of data (years) in order to run Mann-Kendall test at monthly scale? If I have only 8 years of daily stream flow, can I run Mann-Kendall? Best Regards
  19. S

    Selecting of statistical test?

    I have a study whereby I asked two groups of participants (Clients (N=76) and Professionals (N=62) what qualities would make a treatment interaction positive and what qualities would make a treatment interaction negative. As part of my analysis I have totalled: - the number of positive...