Nothing.
The data is just data. It says nothing. It’s your history, experiences, and worldview that project your voice onto and into the data.
It seems like the data is talking, but it’s really you.
And that’s a good thing because the story emerges when you combine yourself with the data. It might be a true story, or it might be fiction. Most likely there’s some of both. Stories uncover questions. Questions lead to more questions. Science happens when you investigate the questions.
In any case, the power of the data isn’t its voice. It’s yours.