design

  1. M

    Question concerning an "unusual" research design

    Hey everyone, I have a question concerning a between group research-design and I wonder if it is very wise since I never came across a similar design (the provided example is of course fictional). Basically, i want to randomly assign participants into 4 groups (one control condition). For...
  2. 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...
  3. M

    Should I handle this as a within-subjects, between-subjects or a mixed design?

    My design has two dependent variables (likeability and persuasive power). The independent variable is advertisement version, with 2 levels (individualistic and collectivistic). The participants of the questionnaire each saw 4 different advertisements. These 4 advertisements were either...
  4. L

    Need design help...not sure how to analyze

    Hi, I am writing a proposal in which I am trying to implicitly activate a stereotype. Specifically, I want to see if professional sexy attire (not revealing...i.e., knee length pencil skirt, collared shirt, fitted blazer) will activate the "business woman" stereotype or the "sexy woman"...
  5. G

    What design does my study have?

    Say for example I wanted to do a study comparing cats (the control group) and dogs, measuring the extent to which they exhibit 4 behavioural variables. My initial graph should display the differences found between the two groups, but then I want to dig further into the results. In my dog...
  6. C

    Survey Design Help

    Hi Everyone, I am having a lot of trouble figuring out the runs for a 2*3 4*4 survey design. From the following site, it is orthogonal at 16 runs, so I don't think I am trying to do something impossible. http://neilsloane.com/doc/cent4.html But for the life of me I can't...
  7. L

    Nested design

    I am conducting a study investigating the effects of different media treatments on protein expression in cells. I have four levels of media treatment which are crossed with valproic acid or no valproic acid (ie a 4x2 factorial design). The question I have is with regards to nesting. Each...
  8. A

    Statistical Study Help

    Hi, would someone mind reading this study and explaining the statistics used and some of the graphs and charts? I'm only in an introductory statistics class so I'm not familiar with all the statistics in this study. http://www.nature.com/ijo/journal/v30/n9/full/0803279a.html Thank you!
  9. I

    What is booster sampling?

    We are doing convenient sampling rather than random sampling for a research that we are conducting. The authority is concerned about the reliability of the sampling. They have suggested that we look into booster sampling. Can any of you please let us know more on this? or redirect to...
  10. S

    Non-Equivalent Group Statistical Analyses - is ANOVA appropriate?

    Hi there, I have pre/post data on the same tool for two different populations (Group A: Higher needs, Group B: Lower needs) and two different services (Intensive counseling for group A, Brief counseling for group B). Other variables include age, gender and length of service. Would it be...
  11. C

    Mistake in design? No control group...!

    Hi all, I am concerned that I have made an error in my design and need to present stats soon and fear looking like a fool :( Essentially what I wanted to look at was whether a treatment type had a positive influence on clients. Unfortunately, there was no ability to have a control group...
  12. P

    Designing SPSS file for paired-sample repeated measure (pictures added)

    Despite my statistics course, I am not able to design SPSS file for my dissertation. My experiment is on deception and is between two people, who swap roles every round. Their choices are; --------------------P2; --------------------Call true-------call false P1 True statement...
  13. B

    Can a convenience sample ever be considered truly cross-sectional?

    I'm having a debate over terminology with a colleague. We've done a small census survey (n<50) of residents and staff at a local out-patient clinic. Variables are knowledge/attitudes about resident education practices. We are making no assertions about generalizability to other clinics. Is it...
  14. J

    Comparing two means to One

    Hello, I have a study with 3 groups (depression, anxiety, controls) who were given 3 interview conditions (sad memory, happy memory, anxious memory). The DV is a linguistic variable (e.g., number of verbs used). To analyze main effects and interactions (group*memory condition), I have been...
  15. philraymond

    Designing A Poll - Need Your Brilliant Stats Mind!

    Hey guys, I'm new here! I'm creating a poll for my gardening website with a hope of extracting some interesting data. I just want to make sure I don't invalidate the data right away by poorly designing the poll, which at this point is probably an issue since I don't know how to do it. I'm...
  16. 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...
  17. M

    Want to be researcher- needs help

    Hello all! I am currently designing my first research project and am confused on what to do after I have my data. I have a basic understanding of Stats, but need direction. I am a music therapist and am designing a research project examining the effect of music to reduce children's anxiety...
  18. R

    Replication in logistic regression

    Hello. I'm planning a seed germination experiment where n total seeds are evenly distributed across i replicates of j treatments (so that n equals i*j*number of seeds per replicate). I will compare the proportion of germinated seeds among treatments using a logistic regression model. My query...
  19. L

    Paired t-test using averages

    Hi, I would really appreciate if you could help me with my research design for my thesis. I am investigating a group of companies in terms of % of female employees compared to the respective industry average. The problem is that the companies are from different industries, and of course...
  20. F

    assist in design matrix,contrast matrix using limma

    Hi all, I'd really appreciate if someone can explain to me whether I've taken the following steps correctly. I'm trying to find the difference in gene expression between (wt vs mutant) for illumina mouse data(MouseWG-6 v2.0 chip). I used a design and contrast matrix (although i'm not sure...