easy · GMAT Quant
A manufacturing facility tracks defect occurrences per operational run across two production shifts. Shift 1 (18 runs) has a within-shift sum of squared deviations of 1,150. Shift 2 (12 runs) has a within-shift sum of squared deviations of 850. If the total sum of squares (mathrmSST) across all 30 runs is 3,400
What is the between-shift sum of squares (mathrmSSB)?
- 1,400
- 2,000
- 5,400
- 1,100
- 2,250
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