RMP.9:5.1 - Correct the calculation and retain the Method

A team’s accepted Method estimates sample variance for independent observations by dividing the squared-deviation sum by n−1. The receiving conditions still fit this Method. A software default instead divides by n.

For observations 2, 4, 6 and 8, the mean is 5 and the squared-deviation sum is 9 + 1 + 1 + 9 = 20. The specified sample variance is 20/3; the implementation reports 5. The difference is a determinate implementation defect under the case premises.

Correct the denominator and verify the calculation and its dependent uncertainty output. The result is: retain the Method for the named conditions, repair its implementation, identify analyses that used the wrong value, and return consequential corrections through RMP.5 and RMP.8. Unaffected analyses remain valid at their existing reach.

Additional participants or a new efficacy trial would not determine this already specified correction. The known-answer check establishes the corrected calculation; it does not qualify another estimator or a changed receiving situation. This is a completed useful ResearchMethodPracticeRevision.