Statistics are useful in many ways; in addition to enhancing one's understanding of a subject, they can provide persuasive evidence for a point of view. You can find statistics on just about any topic, but it helps to first ask yourself some key questions about the data you're seeking:
In other words, It's helpful to consider where you might reasonably expect to find the data - this can save you hours of fruitless searching.
To avoid searching through endless unreliable websites, improve your google searches from the start.
Use these as part of your search:
Also include words like disseration, thesis, or pdf to bring up more reliable documents. One final point, if you are searching a phrase, use quotation marks e.g., "social policy" "partner abuse"
Try "social policy" pdf site:.gc.ca