2 way anova

  1. C

    Power Analysis and Sample Size determination help!

    Hi all! I am new here so I hope my post is appropriate! I have searched the web and this forum and haven't been able to figure out how exactly I need to perform a power analysis for sample size determination (although I admit I didn't scroll through ALL of the results to my search on this...
  2. L

    2way ANOVA in SPSS- how to view interactions between both fixed factors?

    2 way ANOVA dependent variable and 2 fixed factors My output table gives me P values for the fixed factors separately but I cannot figure out how to view the stats on how both fixed factors interact together. Ex: 1st fixed factor=speed (3 speeds) 2nd fixed factor=substrate (3substrates)...
  3. S

    2 way anova

    Dear SPSS thinkers, I have a case with one dependent variable ( image of a product) and two independent variables, gender and age. My problem lies with how to define the variable age when I only want to use the ages between 18 and 30. The survey has been for all ages to 55. ??? is it...
  4. L

    Two way ANOVA

    Hi, I have 2 groups ('keypad' and 'touch screen'), and each group has teh number of participants who are 'right ahnded and left handed. For key pad: 45 right handed and 42 left handed For touch screen: 9 right handed and 15 left handed. Can I use a two way ANOVA for this? the number...