one way anova

  1. S

    I don't know whether I'm doing ANOVA right!!

    I want to find the significant difference between two groups (1 and 2). As my teacher said I should use anova. but i dont know whether i'm doing that right or not. so these are the percentages: 42.3 44.2 57.6 60.1 66.2 22.6 36.8 58.3 71.6 91.8 the first 5 ones are group 1 and the rest are group...
  2. S

    What Statistical Treatment can I use in this type of data?

    We are currently conducting a small study and have very small background in Statistical Analysis. We conducted some experiments and have gathered some data. Can anyone help me in identifying what type of Statistical Treatment we can use for this? The second column pertains to the number of...
  3. S

    Comparing snake diversity across primary, secondary and degraded sites - Shannon diversity index?

    Hi Everyone - hopefully you can help me with the following! I am looking to ascertain whether there is a difference in snake diversity across primary, secondary and degraded sites, encompassing a protected reserve. I have a total of ten survey sites; two in primary, three in secondary and five...
  4. N

    One way ANOVA or two way ANOVA? + non-parametric equivalents

    Hi, I am unsure about the choice of statistical test for my experiment design. I have four experimental groups, devided by two factors: disease (disease/healthy) and genotype (wild-type/knockout). Groups: wild-type & disease, wild-type & healthy, knockout & disease, knockout & healthy. I am...
  5. N

    One way ANOVA vs Kruskal Wallis

    Hi, I am comparing four groups (measurements of bone thickness and other bone parameters). The distributions are normal (Kolmogorov–Smirnov test) and variances equal between groups (Levenes test). I have 7 samples in each group. As I see from the literature this would call for a parametric...
  6. M

    Diff p-value when using 1wayANOVA and 2wayANOVA on same set of data

    I used the 2way ANOVA to compare 2 treatments (control vs. T1) across 4 groups (A-D). I used the 1way ANOVA to compare 3 treatments (control vs. T1 vs. T2) in group A - only group A had 3 treatments. But the results for the tests were different: the 2way ANOVA said there was no effect of T1...
  7. T

    Sample size calculation for a one way anova (three conditions)??

    Hi there, I am designing a study that compares three conditions (differences in glass shape) on one main DV (drinking rate) (as well as some secondary DVs). I want an adequate sample size to be powerful enough to test the primary hypothesis, that there will be a difference between the three...
  8. R

    Which ANOVA?

    Hi there :) I am struggling to determine which would be the most appropriate ANOVA analysis to use for some work I am doing. I have 3 independent groups: control, CBT group, and CBT + antidepressant group. For each individual, there are 2 pieces of data- before and after treatment...
  9. D

    Which method? Categorical data (IV) and continuous numerical data (DV)

    Thanks in advance for taking a look at my query I have been trying to get some statistical support from my local research department but I am getting conflicting opinions on which statistical methods I should be using to analyse my data. Any thoughts or insights would be much appreciated...
  10. S

    Which stats should I apply on my research data? Confused!

    Hi, I need to know which stats should I apply to my research data. My research data contains four groups of animals. Each groups milk was tested for a particular chemical presence for four weeks. So I have three things which are 4 groups of animals, chemical presence in milk and weeks. Should I...
  11. R

    Is it possible to use ANOVA with a Likert Scale questionnaire?

    I am currently writing my dissertation and the deadline is getting close. I am really struggling with how to analyse my data - I had planned to do a one-way independent measures ANOVA but now I don't know how I will do it, and I've started to panic! My study is investigating whether media...
  12. L

    Interaction effects one way ANOVA

    HI, Just wiondering, is it possible to have interaction efefct in one way ANOVA? I think it is a bit not logic but I need confirmation. Thanks! :)
  13. A

    Statistics advice

    Hello, I have 6 independent groups and one dependent variable. I did a univariate ANOVA analysis and the overall group significance was not significant. Is it okay to compare individual groups with the control group and do a series of unpaired t-tests? Do I need to do a Bonferroni...
  14. B

    Violation of normality assumption for One Way Anova - Non parametric test?

    Hoping somebody can help with this? Recently we conducted a small study with ten participants. Each participant completed the same two tests, 'Test A' and 'Test B', during one session. Five particpants (Group AB) performed test A first, while the remainder performed test B first (Group BA)...