Thanks for your advice,
atm is semester break, so it´s hard for me to get some advice there xD
thing is that -1 is to understand as "neither nor", so i only transformed it as a categorial variable to proof that in the control group there was no stimulus to rate from 1 to 7.
After i proof this, i cut out the value -1 (mutate to NA) and change the scale niveau back to numeric to make an ANOVA to proof the participants perceived the ad stimuli in the desired manner, thats then no problem.
I thought about to make a binomial test, therfore i would dummy code the values so that -1 = 1 and else = 0. Can u tell me how to deal with the if.else function?
WNTest %>%
mutate(WN = recode(.$WN,
"-1" = "1", ifelse(.WN, = 0)")) -> WNTest
I´m pretty much of a beginner in R 