#1
Hello,
I am trying to run an analysis on differences in female and male aggressive behaviours in an animal species. My data is non-normally distributed and it's both numeric and categorical, so I assumed the Wilcox test will be sufficient. However, all medians come back as 0 and my box and whisker plots come back as flat lines. What does this mean? Have I chosen the wrong statistical test?
 

hlsmith

Less is more. Stay pure. Stay poor.
#4
You mean that it is lower bound at 0, or that the animal did not do the task so you gave them a zero?

Also, per your graphs, >50% had a value of zero, correct?
 

Karabiner

TS Contributor
#5
So the vast majority of indiduals did not engage in aggressive behaviour (zero seconds).
Wouldn't it be much easier and more appropriate to just analyse whether a dicotomous
response variable (aggressive behaviour yes/no) was associated with sex?

With kind regards

Karabiner
 
#7
So the vast majority of indiduals did not engage in aggressive behaviour (zero seconds).
Wouldn't it be much easier and more appropriate to just analyse whether a dicotomous
response variable (aggressive behaviour yes/no) was associated with sex?

With kind regards

Karabiner
That would be most definitely the easiest solution, however, the overall time spent doing the action is unfortunately key.