British Columbia net interprovincial flow: selected-period comparison
The claim
British Columbia net interprovincial migration, quarterly: different averages either side of 2022 Q3
A two-segment mean-shift scan over the last 40 quarters selects a split in British Columbia net interprovincial migration, quarterly at 2022 Q3: mean 4,775 before vs 548 after (difference = 1.8× pooled variability). The selected date divides two sets of observations; it does not establish when a change began. This descriptive comparison is not a significance test and does not attribute a cause. Window choice and seasonal patterns can affect it.
Method
Descriptive two-segment mean comparison; selects the largest |difference in means| / pooled standard deviation, reported at ratios of at least 1.5 with at least eight observations per segment. No change-date or statistical-significance inference.
Key sources and licences
- Estimates of the components of interprovincial migration, quarterly — Statistics Canada Licence text read in full
| Added to the Record | 2026-07-13 |
|---|---|
| How it is used | Featured in a product |
| Where it appears | Featured in the population domain story — interprovincial redistribution persisted. |
| What would change it | Demographic-estimate revisions to interprovincial flows removing the shift, or the flow returning to its earlier band. |
| Corrections | 2026-09-14: selected-period comparisons do not establish change dates or statistical significance; calculations are unchanged. |
Technical details
| Record ID | R17-break:interprov_net__british_columbia |
|---|---|
| Detection rule | R17-break |
| Indicator | interprov_net__british_columbia |
This Receipt names the public sources and method needed to reproduce the figures it covers. Corrections are dated and explained, with the earlier published record retained.