Quality Counts

First-Pass Outcomes

The first-pass outcomes split started units into good, rework, and scrap counts.

highlighted = computed this step

First-pass good

First-pass good units are 80.

first-pass good=80\text{first-pass good}=80
First-pass yield and reworkThe chart recomputes first-pass yield, rework rate, scrap rate, final yield, and improvement.first-pass yield and reworkstarted 100; first-pass good 80; final good 95startedstarted 100first passfirst-pass good 80after reworkfinal good 95measurecount/ratemeaningfirst-pass yield4/5good before reworkrework rate3/20sent to reworkscrap rate1/20scrappedfinal yield19/20good after reworkimprovement3/20final minus first-passdeterministic quality-count arithmetic only

Rework and scrap

Rework is 15 and scrap is 5.

rework=15scrap=5\text{rework}=15\quad \text{scrap}=5
First-pass yield and reworkThe chart recomputes first-pass yield, rework rate, scrap rate, final yield, and improvement.first-pass yield and reworkstarted 100; first-pass good 80; final good 95startedstarted 100first passfirst-pass good 80after reworkfinal good 95measurecount/ratemeaningfirst-pass yield4/5good before reworkrework rate3/20sent to reworkscrap rate1/20scrappedfinal yield19/20good after reworkimprovement3/20final minus first-passdeterministic quality-count arithmetic only

Count check

The outcomes sum back to started units.

80+15+5=10080 + 15 + 5 = 100
First-pass yield and reworkThe chart recomputes first-pass yield, rework rate, scrap rate, final yield, and improvement.first-pass yield and reworkstarted 100; first-pass good 80; final good 95startedstarted 100first passfirst-pass good 80after reworkfinal good 95measurecount/ratemeaningfirst-pass yield4/5good before reworkrework rate3/20sent to reworkscrap rate1/20scrappedfinal yield19/20good after reworkimprovement3/20final minus first-passdeterministic quality-count arithmetic only