So, this is a story that has a lot of minor details and twists and turns that are more complex than I am able to write and keep you, the reader, with your attention. I was invited to participate in a paper, after the initial idea and some execution began to happen. Basically it was an online survey and the group back then realized that they were not going to be able to analyze that amount of data in such a short time before the publishing deadline. The first author contacted me then, to help with data tidying, summarization and visualization, and some basic statistical tests.
By the time I was fully committed, some information was slowly revealed. I realized there were some issues with the data itself: questions that were not properly configured for statistics, wrongly designed questionnaire (questions had non-mutually exclusive answers when they should have) and there were in two languages, meaning the answers of one language had to be translated or converted into one to make proper data analysis. There were several open-ended question that got more than a thousand answers that needed to be categorized by hand. The core scientific questions that could be solved with the data were simply non-existent, they hoped that somehow the questionnaire itself would post-hoc yield some results.
I brought the tools and knowledge in statistical software (which none of the other members of the group had, but the "courtesy author" that had minimal participation in the work). I brought interesting insights that were original and of my authorship. All the tables and figures that were actually useful were initially proposed by me and they ended up in the final manuscript. Over 4000 lines of code were written in R. To be fair, I did not participate in the write-up or the results, nor in the introduction and discussion sections. Whenever the manuscript was sent for revisions, I participated and gave feedback on the topics that were being discussed. I gave the feedback that was required at the time and even gave a final typo and grammar review (500+ mistakes were there). When the manuscript was being recirculated, I was probably too naive to not see that in the authorship order, an "These authors have contributed equally to this work" asterisk was on 3 of the 6 authors and I was not included in that group. I only noticed that in the last review before sending it to the editor for final approval. There was not a meeting where this was discussed and decided.
Do you think that I have the right to ask for a change in the author attributions?