EU referendum, brexit and the aftermath

I refer to:

"Research organisation ‘The Online Privacy Foundation’ has released interim findings from a series of Facebook studies examining the psychological biases, personality traits and attitudes of 8,995 voters in this week’s Referendum on the UK’s EU membership."

What are the studies, and how has the chosen 8,995 been separated between them, from what socioeconomic backgrounds and geographical locations are these people, and how does the percentage reflect each of these groups?

By the end of the report, it breaks down a small table of conclusions, but fails to refer to the limitation of the research.

"Additional findings show that:"

Show me the pool, show me the numbers. Are they findings from the same 8,995 or from other studies?

All reports are based on interpretation, but sociology (which this is basically) is rife with holes on how to interpret data. I'll dig out the books if I find time and try get the old quotations.