paired t

  1. Z

    SOS action research project question

    Firstly, I am grateful for any assistance. I am a novice who tries hard :yup: I am trying to write up the results section for a report and have completed a paired t test and Cohen's d using pre and post data sets from same group: 35 students I have completed the test and worked the math...
  2. C

    Paired T Test ???

    Hi I am trying to work out which statistical test to use to determine whether there is a relationship between visual acuity (how small letters on a letter chart are) and contrast (how dark the letters are). I have used one sample of participants and tested both visual acuity and contrast on...
  3. A

    Suggested form of statistical analysis?

    I appreciate the feedback so far. Now, I'm wondering what type of statistical analysis I CAN do with a large amount of data that is pretty important to the field. I am in teacher education and I have four groups of preservice teachers that I follow pre- and post-teaching. We are attempting to...
  4. A

    Paired-t woes: hours of work and my output still isn't "valid."

    :confused: If anyone can comment on why my output reads "correlations aren't valid," I would be SO grateful. I am wondering if it is simply because of the way I arranged the SPSS d-base in the first place? But maybe it is something else entirely. I am studying 32 different dependent...