easy · GMAT Quant
A quality assurance analyst in a microchip manufacturing plant evaluates processing times across three production lines. The total sum of squares (mathrmSST) across all lines is 1,850, and the within-group sum of squares (mathrmSSW) measured across the individual lines is 1,120.
What is the between-group sum of squares (mathrmSSB)?
- 2,970
- 1,120
- 1,485
- 730
- 560
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