Missing census tract

Question

Students in an urban geography course are interested in studying Montreal's small "Chinatown" district. It occupies portions of CT's 55-56-57. When we look at the CT level data for population, all of these census tracts have available data. We have looked under a number of other BST's however (immigration, mother tongue, housing) and CT56 is not there. Is there a source from which we could determine why the data is unavailable?

Answer

The division provided the following explanation:

CT - 56
1) The Data quality index for the 2A (short form) questions and the global non-response rate is higher than or equal to 5% but lower than 10%. This means that the data based on the 100% level (2A Data) is not suppressed.

2) The Data quality index for the 2B (long form) questions and the global non-response rate is higher than or equal to 25%. This means that the data based on the 20% level (2B Sample Data) is suppressed.

For 2001 only in cases where geographic areas have a non-response rate higher than or equal to 25% are the areas suppressed.

An additional document will be on the FTP site highlighting the ˜Data Quality and Confidentiality Standards andGuidelines" (FTP: dli/census/2001/Quality-Index).