Effort estimate models
Form, calibrate and reconcile effort estimates with explicit work units.
Separate one-off effort from work per item
Use an effort equation that changes correctly with volume.
Estimate work from a crossed coverage matrix
Count planned combinations before applying effort per combination.
Calibrate an estimate against comparable recorded effort
Separate a supplied calibration factor from a universal productivity claim.
Sum effort ranges without calling them a confidence interval
Calculate a bounded total under the stated possible combinations.
Reconcile a top-down effort allowance with item estimates
Expose unallocated effort instead of inventing a task to use the balance.