Use this sociology calculation to reproduce a named demographic, inequality, mobility, urban, or survey measure when the population, period, categories, and coding rules are explicit.

Stream matrix

Required list. Square origin-by-destination count matrix; diagonal non-movers are excluded from gross migration.

The cited overview of Sociology supplies background for the terminology and domain context used by this tool.^[1]

Sum every off-diagonal origin-destination cell of a square migration stream table into gross migration, excluding non-movers on the diagonal. Inputs are interpreted exactly in the displayed units and the calculation returns the following fields without presentation rounding.

Gross migration

Returned number. All moves counted across every stream.

• Definitions, sampling error, missing data, historical context, geographic boundaries, weighting, and classification choices can materially change social indicators and their interpretation.
• Use finite inputs in the displayed units, preserve source measurements and assumptions, and independently verify consequential decisions.

Report the source population and uncertainty, inspect disaggregated data, and compare multiple accepted indicators rather than treating one summary statistic as a complete social explanation.

• Mobility Transition Probability Table Tool

  Row-normalize an origin-by-destination flow count table into mobility transition probabilities.

• Stouffer Intervening Opportunities Access Ratio Calculator

  Compute an access-ratio heuristic as opportunities at a destination divided by opportunities encountered before it; this is not the cumulative Stouffer formulation for migration probability.

• Migration Effectiveness Index Calculator

  Measure what share of gross migration actually changes the population with the migration effectiveness index.