'Highest certificate, diploma or degree' refers to the highest certificate, diploma or degree completed based on a hierarchy which is generally related to the amount of time spent 'in-class.' For postsecondary completers, a university education is considered to be a higher level of schooling than a college education, while a college education is considered to be a higher level of education than in the trades. Although some trades requirements may take as long or longer to complete than a given college or university program, the majority of time is spent in on-the-job paid training and less time is spent in the classroom.

Canadian censuses were conducted in 2001 and 2006. Income data from these censuses relate to the calendar year prior to the census year, i.e., 2000 and 2005 respectively. For additional information, please refer to the 2006 Census Dictionary, Catalogue no. 92-566-XWE.

Canadian censuses were conducted in 2001 and 2006. Income data from these censuses relate to the calendar year prior to the census year, i.e., 2000 and 2005 respectively. For additional information, please refer to the 2006 Census Dictionary, Catalogue no. 92-566-XWE.

Wages and salaries - Refers to gross wages and salaries before deductions for such items as income tax, pensions and Employment Insurance. Included in this source are military pay and allowances, tips, commissions and cash bonuses, benefits from wage-loss replacement plans or income-maintenance insurance plans, supplementary unemployment benefits from an employer or union as well as all types of casual earnings during calendar year 2005. Other employment income such as taxable benefits, research grants and royalties are included.

Receipts not counted as income - The income concept excludes gambling gains and losses, lottery prizes, money inherited during the year in a lump-sum, capital gains or losses, receipts from the sale of property, income tax refunds, loan payments received, lump-sum settlements of insurance policies, rebates received on property taxes, refunds of pension contributions, as well as all income 'in kind,' such as free meals and living accommodations, or agricultural products produced and consumed on the farm.

Average income of individuals - Average income of individuals refers to the weighted mean total income of individuals 15 years of age and over who reported income for 2005. Average income is calculated from unrounded data by dividing the aggregate income of a specified group of individuals (e.g., males 45 to 54 years of age) by the number of individuals with income in that group.

Median income of individuals - The median income of a specified group of income recipients is that amount which divides their income size distribution into two halves, i.e., the incomes of the first half of individuals are below the median, while those of the second half are above the median. Median income is calculated from the unrounded number of individuals (e.g., males 45 to 54 years of age) with income in that group.

Standard error of average income - Refers to the estimated standard error of average income for an income size distribution. If interpreted as shown below, it serves as a rough indicator of the precision of the corresponding estimate of average income. For about 68% of the samples which could be selected from the sample frame, the difference between the sample estimate of average income and the corresponding figure based on complete enumeration would be less than one standard error. For about 95% of the possible samples, the difference would be less than two standard errors and, in about 99% of the samples, the difference would be approximately two and one half standard errors.

Average and median incomes and standard errors for average income of individuals will be calculated for those individuals who are at least 15 years of age and who have an income (positive or negative). For all other universes (families (census/economic), persons 15 years of age or older not in families or private households), these statistics will be calculated over all units, whether or not they reported any income.

These statistics can be derived for after-tax income, earnings, wages and salaries, or any other particular source of income in the same manner.