Statistic after statistic almost always slewed in favour of those who need a favourable statistic. We all know, or should know, that any statistic has an alternative reading and any static can be made to look good towards the person or company using the statistic to punt their wares or ideas.
The results of surveys and statistics are dependent on many factors. Not least of which is geographical location. If you ask a question in an affluent southern area the answer would likely be different if you ask the same question in a not so affluent northern area.
And so it goes. If those conducting a survey want statistics that go in their favour they will ask their pointed questions to a group of people in an area or areas of the country they know will give the answers they want thereby making the statistics come out in their favour.
Next time you read about a survey or some erstwhile person or company or organisation trots out some statistic or other take it with a rather large dose of salt.