Sure, i am not a study visa applicant. I have a job offer in my domain in which i have significant experience, had an LMO and applied for temp work visa on behalf of that. So i am not required to show any amount of money in my bank. Even if i submitted bank statements, they were meant to providence evidence of my earning capability i.e. salary being transferred regularly. Same applies to my family i.e. every where i needed to quote "available funds", i was advised (by my employer's lawyer) to put in my annual salary (in Canada) there.
Generally speaking for study visa you need to show fee + living expense for a year at least. That depends upon cost of your diploma program, plus i think the figures were something like 12k CAD per annum (living cost only, not counting tuition fee), then additional 5-6K for first dependent and i guess additional 5k per dependent if you are taking family along.
This above is just from my memory but their is a formal chart at CIC website showing calculated expense per person per year. You should consult that in addition knowing your fee estimates.