The top-two share is the cumulative share after the first two sorted categories.

highlighted = computed this step

Top-two count

The top two categories contain 20 defects.

12+8=2012 + 8 = 20
Top-two Pareto shareThe chart shows the sorted counts and the top-two cumulative share.top-two Pareto sharetotal defects 30; top two share 2/3Scratch12cum 122/5Dent8cum 202/3Label5cum 255/6Seal5cum 301rankdefectcountcum countcum share1Scratch12122/52Dent8202/33Label5255/64Seal5301deterministic defect tally arithmetic only

Top-two share

The top-two share is 2/3.

20/30=2/320 / 30 = 2/3
Top-two Pareto shareThe chart shows the sorted counts and the top-two cumulative share.top-two Pareto sharetotal defects 30; top two share 2/3Scratch12cum 122/5Dent8cum 202/3Label5cum 255/6Seal5cum 301rankdefectcountcum countcum share1Scratch12122/52Dent8202/33Label5255/64Seal5301deterministic defect tally arithmetic only