Honourable Chair, members of the committee, I want to thank you for giving me this opportunity to appear before the committee today.
I think it will be useful, given the recent discussion of issues related to the census, to briefly describe the census process. This will be the basis for my five-minute remarks.
I'll describe this process with reference to two objectives that Statistics Canada tries to achieve, among others--first, to get as high-quality data as possible; and second, to gather these data at the least cost possible. These are the kinds of approaches that have given Statistics Canada the international reputation it has.
Let me break this entire process into six parts.
The first step is consultations with stakeholders and data users. The 2011 Census Content Consultation Guide was released in July 2007, and the 2011 Census Content Consultation Report was released in July 2008. Statistics Canada received more than 1,200 content-related suggestions from more than 150 organizations and private citizens.
The second step is the development of questions. Based on these consultations, and the need for continuity of historical information, changes from one census to the next are generally quite small. Sixty per cent of the questions asked in the 1971 census still remain. Questions in the 2006 census now dropped are related to unpaid work. Questions added for the 2011 census include commute time, child care support and its costs, and subsidized housing.
The third step is to determine which questions go into the short form and which to the long form. The distinction between the population short and long forms began with the 1971 census, as before that there was just a single questionnaire.
Statistics Canada does not differentiate among these questions on the basis of their importance, as they are all tied to the needs of a variety of users. For example, the head-count question in the short form may be the most important for governments in the distribution of parliamentary seats or federal-provincial transfers. But for a city's transportation planning department, the most important piece of information may be about how people get to work and how much time they spend commuting, a question that is in the long form.
It therefore is not the importance of the questions that determines whether they are in the short or the long form. What determines this division is a cost-efficiency test: how can we get the highest-quality data possible at the least cost?
To the best of my knowledge, those working at Statistics Canada on the 1971 census determined that for reasonably comparable levels of quality, some questions must be asked of the entire population. These ended up in the short form. For other questions, the required quality of information would be achieved by scientifically selecting a representative sample and making it mandatory for the sample to respond; this became the long-form questionnaire.
Naturally, the cost of using one-fifth of the population as a sample, rather than the whole population, reduces the cost of the census significantly, while reducing the response burden substantially as well.
Since 1971 Statistics Canada methodologists have reviewed this distribution of questions between the short and the long forms for every census cycle. This is the only reason why the following question is on the short form--and I quote--“What is the language that this person first learned at home in childhood and still understands?”, and on the long form, “During the week of Sunday May 1 to Saturday May 7, 2011, how many hours did this person spend working for pay or in self-employment?”
The fourth step in the process is for Statistics Canada to submit the proposed questions to the government and for the government to review these proposed questions and tell Statistics Canada what the census content will be.
The fifth step is to collect data. Again, to constantly strive to reduce costs, Statistics Canada moved in a substantive way to Internet data collection in the 2006 census. The May 2009 census test indicated the potential to double this response rate in 2011 to about 40%.
Statistics Canada's per-dwelling census cost is $43.77 in 2009-10 dollars, which compares with the cost of $126.18 in the U.S. and $49.68 in Australia, all in terms of Canadian dollars. Both are countries that we normally compare ourselves to.
The sixth step is to transform raw data into data that is useful for the users and to disseminate it. Dissemination begins about a year after the census, as the large amount of data has to be processed, edited, and checked for accuracy, gaps, and consistency. The data is analyzed thoroughly to understand the results before it is released publicly.
The whole process takes about seven years.
Thank you, Mr. Chair.