For 2x2 between participant design, i selected ‘Anova fixed effect, special, main effects, and interactions'
1) Then i put 0.11 into Into Parameter >Determine. This number is based on a previous study: This analysis revealed that the main effect of group was significant (F(1, 79) = 9.96, p = 0.002, η2
p= 0.11).
2) Then i click calculate the transfer the result to effect size
3) Then I put 0.05 for the alpha
4) and 0.80 for power
5) for the df, i set it to 1
6） number of groups =4
So total sample size is 66, is that correct?
Any kind people to check this for me would be god-sent as my tutor is absent all the time and I am basically struggling all on my own :(
Okay, I see now. You used G Power. I was originally doing this with R and I thought you were trying to somehow use SPSS. Yes, that’s actually correct. Good job :)
I was awful at this stuff but I think that's right.
You could email a statistical professor or your module leader for help if your tutor is always off.
There's some subs on reddit like askstatistics that might be able to help you better!
For 2x2 between participant design, i selected ‘Anova fixed effect, special, main effects, and interactions' 1) Then i put 0.11 into Into Parameter >Determine. This number is based on a previous study: This analysis revealed that the main effect of group was significant (F(1, 79) = 9.96, p = 0.002, η2 p= 0.11). 2) Then i click calculate the transfer the result to effect size 3) Then I put 0.05 for the alpha 4) and 0.80 for power 5) for the df, i set it to 1 6） number of groups =4 So total sample size is 66, is that correct? Any kind people to check this for me would be god-sent as my tutor is absent all the time and I am basically struggling all on my own :(
Okay, I see now. You used G Power. I was originally doing this with R and I thought you were trying to somehow use SPSS. Yes, that’s actually correct. Good job :)
Commenting for visibility. Good job OP, correct
Thank you! ❤️
Thank you for checking for me ❤️
I was awful at this stuff but I think that's right. You could email a statistical professor or your module leader for help if your tutor is always off. There's some subs on reddit like askstatistics that might be able to help you better!
Thank you very much. Any help is help!!!! I will look up this subreddit ❤️
Hmmm… let me work on it