nonparametric

  1. P

    Multivariate nonparametric comparison

    I want to test whether two objects are similar or not. I have multivariate samples like this: Object1: X1, Y1, Z1, etc. Object2: X2, Y2, Z2, etc. Each letter is a variable, where same letter means same type of measurement. Variables do not follow a specific distribution (nonparametric)...
  2. A

    Nonparametric statistical significance test for largely skewed count data

    My research design looks as follows: an experimental game with 4 participants (human subjects), repeated for 20 rounds. During each round, participants are allowed to form bilateral coalitions which cannot be dissolved until the end of a round. Hence, six different possible coalitions exist, but...
  3. K

    Nonparametric/Ranking Data Help!!

    Hi all, I am a PHD student attempting to come to grips with an analysis of some recent data. I have a repeated measures design. 220 students were presented with 13 different problem scenarios and then had to indicate who they would seek help from, ranking a list of seven help providers (ie...
  4. C

    Constructing a Nonparametric confidence interval

    The following data consist of six TcCB measurements from a particular site: 0.26 1.84 0.78 1.59 0.84 1.53 Use the table below to construct the shortest possible non parametric confidence interval for x 0.25 (25th percentile) assuming that the confidence level must be at least 80%. So, I...
  5. F

    Best Nonparametric test for nominal and continuos variables

    Hello everybody. I'm looking for the best test to find an association between two variables: - a test score (continuous, ranging from 0 to 100); - a yes or no binary variable (like, for instance, being clever or not) Variables are not normally distributed and their relation is not...
  6. F

    Spearman's correlation: a continuous with a binary variable

    Hi everyone. I'm pretty new to statistics so sorry for the dummy question :o I need some nonparametric statistics to correlate a binary variable with a continuous one. Binary variable is yes or no. For instance: - one variable is a blood test score (ranging from 0 to 100); - the other...
  7. F

    Wilcoxon rank sum test with binary data

    Hello Everybody, Can the Wilcoxon rank sum test be used when the variable of interest is binary? For example, say I have a control group and a treatment group, and I am interested in seeing whether the treatment group goes to college more than the control group. The variable "college" takes...
  8. R

    T-test vs nonparametric for likert scale (very small sample size)

    Hi everyone, I'm in the process of completing my masters thesis, and while I did my share of psych stats in my undergrad it's been YEARS and I'm a lil rusty! Any advice or help anyone could provide would be greatly appreciated, and you may even get a mention in my thesis acknowledgement...
  9. O

    Box cox - nonparametric?

    Hi, I have a major problem with the SPSS analysis I would like to conduct... Please, if anyone has an idea - its very much appreciated ;) Some background information: The plan was to do a multiple regression analysis with four independent variables and one dummy variable (capturing a...
  10. F

    Nonparametric alternative for Spearman's rho for correlation strength?

    My question is as simple as it may be difficult: is there any other nonparametric test besides Spearman's rho to compute the correlation strength between a predictor and an outcome variable of which the first is almost certain to have a skewed distribution? The reason why I'm asking is that in...
  11. B

    Differences in responses on a 5 point scale between three groups? Kruskal-Wallis?

    Dear madam/sir, Recently I have designed a course that was run at three different locations. To know what the students thought of the course they were given the same questionnaire on all three locations. One of the questions as an example was to indicate the extend to which they agreed with the...
  12. S

    Which nonparametric test to use for comparing two related samples?

    Hi, I am looking to compare day and night time depths for basking sharks in SPSS. I found that if I have day depths for all sharks together I can use a Mann Whitney U test as then the data is independent (they are non normally distributed). However, I also need to compare each shark...
  13. K

    Help for a nonparametric test

    Hi, I have a set of data which is consisted of ages of 5 players and their scores in game. The question is this: Does the older players tend to get higher score? Which nonparametric test should I use? and How should I proceed? Thanks
  14. W

    Trying to evaluate/measure how much 1 variable affects another.

    Hello. So I've been helping look at some data for a fundraising event my school ran. We used an app and the school wants to evaluate if it is worth it. From the event I have the data of all donations (how much it was and who it went to). So what was done is for all fundraisers the sum of all...
  15. A

    effect size for McNemar's?

    Is it possible to calculate effect size for comparisons made using the McNemar's test? If so, how? I am at a total loss on this after spending A LOT of time combing the web. I would be so grateful if anyone had any ideas!
  16. M

    Two-Sample, Nonparamteric test for "stochastic equality" with discrete numerical data

    COMPLETE Hello, I would like to present a statistical analysis I performed on discrete numerical data. I am fairly new to statistics and would really appreciate another person’s input on the statistical methods employed and how to correctly interpret the results. I have supplied relevant...
  17. V

    High Mann-Whitney U number good or bad?

    Hello all! I'm quite the newbie with statistics so I'm probably asking stupid questions, but I've been googling now for quite a while without success. I've analysed newspaper stories and one of the variables is how many photographs they contained. I have two distinct paper groups from two...
  18. S

    extremely small sample size

    I have a Y variable that is measured in parts per million (ppm). However, it can be converted to a binomial variable comparing against a p=.1. The problem is only 4 samples were collected, and the response of telling them to collect more samples is not possible. Is there any statistical test...