experiment

  1. N

    Can I use a set of LSTMs to simulate counterfactual states?

    Motivation: I have a system comprised of three probabilistic boolean timeseries and I want to simulate how two of them would react, if a certain intervention would take place (lets say, timeseries 1 can be influenced and will definitely be "0" for the next 6 observations). (The managerial...
  2. H

    We did an experiment and don't know how to start/proceed with statistics?

    We had to do an experiment in my research methods class. Me and my group did an experiment where we tested if participants remembered words better with or without pictures that match the words. So now we have two sets of data: One set with the number of words they remembered and one set with the...
  3. R

    Partial least squares (path analysis) - why and how to interpret attached results?

    For my research, I have a model with various mediators and one moderating variable (see image). I derived my data from an experiment. Short summary: - Incentive structure is the main IV (three treatment groups) - Risk behaviour is the DV (continuous variable) - Accountability is another...
  4. R

    SPSS: regression analysis for 3x2 experiment. How to test for interaction

    Dear all, For my research I have the following facts: - I have two categorical IVs: - treatment condition called competition, which has three conditions ("low", "medium" and "high") - Another factor that is given to half of the group, called accountability (two options...
  5. A

    Estimation of suitable significance level for high numbers of experiments

    I am a scientist and work with high numbers of experiments. For example: I have tested 1000 different parameters between 2 groups. I found 10 parameters, which are significantly different between the tested groups with a significance level of 5%. For only 1 tested parameter it would be...
  6. G

    [AMOS] Model with a categorical IV

    Hi all, I am looking for some AMOS advice regarding an experiment I've conducted, with a categorical IV. How should I include this categorical IV in AMOS? Experiment background: Participants in the experiment received a news item about brand A, brand B, or brand C (3 different types of...
  7. L

    Between Subjects Experimental Design- How to analyse

    I have conducted an experiment with 2 conditions, 50 people in each condition. Each person completed a booklet of tasks and self-report measures (the same booklet in each condition). I have conducted a simple T-test and have found significant differences between the two conditions on the...
  8. F

    Help needed to check statistics in thesis

    I would really need someone to check my stats work for my thesis, as I am not entirely sure about what procedures I carried out. Quick overview of my my experiment: - I investigated 2 methods of using worked examples to study the division & multiplication of fractions in 2 year 7...
  9. N

    MANOVA design

    Being rusty, I would be grateful for a quick confirmation of MANOVA being an appropriate model: I have one dependent variable but 6 independent ones: group (3 levels), subjects per group (a variable number, between 11 and 110 subjects) and then the experimental variables: stimulus (3 levels)...
  10. A

    test of significance for comparing change between two groups

    What test for significance is best to use to test the difference between the change of a categorical variable in a control group and the change in a pilot group? I do not think I can simply compare the 'after' for each because the 'before' for the two groups was statistically different - they...
  11. C

    Experiment With Fictitious Data

    After a semester full of open-note/curve graded exams and very few homework assignments, our stats professor decided that our final project would weigh heavily on our term grade...and since we only have the weekend to complete it and haven't actually learned anything in class...none of us know...
  12. F

    Subject responses in multiple period experiment

    Hello Everybody, In an experiment, players play a game for 30 rounds. In each round, they choose either good A or good B. In various treatments, the incentives are changed in some way. I am interested in studying the difference in frequency of choosing good A in a control vs a treatment...
  13. S

    2X2 design ANOVA SAS

    Hello, I am beginner with statistics and I need some help for my data analysis. In my research I am trying to find an impact of colors on websites and types of webstores on customer trust, purchasing intention, preference etc. For example websites selling insurance service will be trusted more...
  14. L

    Fixed effects versus standard errors

    I have experimental data from a correspondence test in the rental housing market. On which ground should I choose between: 1) F.E. for the region where the apt is and cluster s.e. on the day I sent the message 2) cluster s.e. on region and F.E. on day when the message was sent (or...
  15. S

    pre- post- intervention survey analysis

    Hi all, I am trying to figure out how to analyze survey results administered as part of a randomized trial. We drew random samples of households from 4 different locations: 1 neighborhood which received treatment a, 1 neighborhood which received treatment b, 1 neighborhood that received...
  16. B

    How to test for differences in binary score data

    I have data from a human subject study that was setup as a 3x2 (system by task type) experiment, with 24 participants. Each participant completed 6 tasks in all, one using each of the 3 systems, and 2 task types. I have two performance measures: the first is completion time, and the second is a...
  17. G

    MANCOVA interaction effect

    Hello everyone, I am facing the following problem: I conducted a MANCOVA to investigate whether a control group significantly differs from 2 other experimental groups with regard to 4 different dependent variables. There was a covariate included which was supposed to moderate the relationship...
  18. B

    probability question (re success)

    got the answer already. thanks! :)
  19. D

    Biomedical experiment design

    Hi, In one of my Biomedical Engineering lab courses, I have to design a data analysis methodology to statistically prove the identity of an unknown neurotransmitter solution using an earthworm crop/gizzard (basically a piece of smooth muscle that reacts to different neurotransmitters...
  20. K

    Using a correlation as a measure of how well heuristic predicts outcome?

    Hello, I am preparing an experiment in which I would like to test a heuristic. This heuristic predicts how well certain facts are known. The values returned by the heuristic are between 0 and 1. I was thinking of testing this heuristic by asking people if they know a particular fact and...