# Wilcoxon Signed Rank test and reporting ties

In writing up results for a Wilcoxon Signed-Rank test, do you have to state if there were no ties in the data?

Also, should the Z statistic be reported if the sample size is < 20 ?

Thanks!

I think it's important to make it clear what kind of variable it is, which generally will convey something about the risk of ties, e.g. "The response variable consists of reaction times recorded to the nearest millisecond" would indicate a very low risk of ties, while "number of spelling errors per page of text" - being non-negative integers and generally small values would be very likely to have ties. I'd also certainly state whenever there were ties and convey something about the extent. It couldn't hurt to say there are none (on the other hand you have $n<20$ you could give the entire data set in little more space, but perhaps your audience objects to seeing numbers).