engineering recuitment OPSC Assistant Industries Officer Mock Test 2025 Industrial Engineering Quality Control
In the measurement of axles of bicycle wheels. The sum of all 25 subgroup ranges is 370 and the sum of all 25 subgroups average is 2500. The value of factor A2 is 0.73. What is the upper control and lower control limit of for average charts?
1
110.8, 89.2
2
80.1, 100.8
3
120.2, 75.4
4
70.4, 110.2