Metrics_spv

Metrics--------------------------------------------- : 

Metrics--------------------------------------------- Why Metrics are important Serves as yardstick to measure success and progress of project. Helps to decide appropriate / corrective actions

Project Metrics : 

Project Metrics Weighted Defect Rate (WDR) Weighted Defect Delivered Rate (WDDR) QA Effectiveness Review effectiveness Rework Effort Effort Variance Schedule Variance

Weighted Defect Rate (WDR) : 

Weighted Defect Rate (WDR) Formula: (Total weight of internal defects) ----------------------------------------- ( Total Effort ) Example 1 Critical (10), 2 Major (2*5), 1 Med (1*3) Effort : 250 Hrs Total Weight = 10 + 10 + 3 = 23 WDR = 23 / 250 = 9.2 %

Weighted Defect Delivered Rate (WDDR) : 

Weighted Defect Delivered Rate (WDDR) Formula: (Total number of defects (internal + external defects)) ---------------------------------- ( Total Effort ) Example 1 Critical (10) , 2 Major (2*5) , 1 Med (1 * 3) – Internal defects 2 medium external defects (2*3) Effort : 250 Hrs Total defects weight = 10 + 10 + 3 + 6 = 29 WDDR = 29 / 250 = 11.6 % This metrics shows how much defect is slipping into production / customer release. I.e. For every 100 issues your testing team finds, 11.6 issues are missed

QA Effectiveness : 

QA Effectiveness Formula: (Total number of internal defects) ---------------------------------------------- ( Total defects (Internal + External)) Example 4 Internal defects 6 External defects QA Effectiveness = 4 / 6 = 66 %

Review Effectiveness : 

Review Effectiveness Formula: (Total number of review defects) ---------------------------------------------- ( Total defects (Review + Testing defects)) Example 4 Review defects 5 Testing defects Review Effectiveness = 4 / (4+5) = 44 %

Rework Effort : 

Rework Effort Formula: ( Rework Effort) --------------------- (Actual Effort) Example Actual Effort 100 Hrs Rework Effort 20 Hrs Rework Effort = 20 / 100 = 20 % Normally rework effort is captured in (Review forms, Project Tracker, Defect Logs – stating the time to fix review comments, fix defects)

Effort Variance : 

Effort Variance Formula: ( Actual Effort – Planned Effort) --------------------------------------- (Actual Effort) Example Actual Effort 100 Hrs Planned Effort 95 Hrs Effort Variance = (100 – 95) / 100 = 5% Note : There could be cases of negative variance. For Example : When you complete work ahead of planned time. In Such cases you may want to re-look at your estimation techniques (Like increasing your productivity factor)

Schedule Variance : 

Schedule Variance Formula: (Planned Value – Actual value) / Planned Value PV = Planned value AV = Actual Value SV = Schedule variance Example PV = 250 Person Hrs work AV = 235 Person Hrs Work Complete SV = (250 – 235) / 250 = 6%