normality issue

  1. L

    Normality is not assumed ( kolmogorov-smirnov sig level= 0.000)

    Currently, I'm doing a research using Beck Depression Inventory on 340 respondents from my university. Before I apply any parametric tests, I tested the normality first, however the normality is not assumed. So, I wondering is the data really not normal or the way I analyze it have problem ...
  2. C

    Testing Significance of Group Differences with Non-Normal Data

    Hi.. I need help with deciding which statistical technique to use for my data My research design involves 2 Independent Variables with 2 levels each (Gender and Age group) and I have 11 scores from a single scale as my Dependent Variable (continuous scores). My sample size is very large (Over...
  3. D

    Pearson's Partial Correlation - Transforming one non-normally distributed variable

    Hi all, I would be really grateful if someone could advise me on an issue I am having. I am carrying out research looking at the relationship between the neural metrics of decision-making and accuracy on the decision-making task and I want to partial out the effect of group (control versus...
  4. L

    [Prism 5] Gather or Individual Analysis? ANOVA or Kruskal?

    To whom it may help: My research is on cellular/molecular responses after hormones farmacological administration and I'm not quite sure how to perform statistical analysis. I have 15 test groups plus my control group (DMEM) and I did my experiments two different times (2 occasions) in...
  5. G

    When Log10 is not sufficient to achieve normal distribution...

    I've examined numberious ways to get my positive skewed data to conform statistically via Shapiro-Wilkes to no avail - Log10 appears to visually suggest it approximates normally distributed data but the test results (000) say otherwise. I've already deleted outliers beyond 2.5 std dev. Thoughts?