easy · GMAT Quant
An aviation maintenance team records component repair times across 5 hangar facilities. The between-group sum of squares mathrmSSB is 920, and the within-group sum of squares mathrmSSW is 1,280.
What is the total sum of squares mathrmSST?
- 360
- 1,100
- 1,280
- 2,200
- 2,560
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