medium · GMAT Quant
A software engineering director tracks sprint story points completed per developer across Team Red (n_R = 16, barx_R = 20) and Team Blue (n_B = 24, barx_B = 30), yielding a grand mean of barx = 26 points. If the within-team sum of squared deviations is mathrmSSW = 2,100
What is the total sum of squared deviations mathrmSST for all 40 developers?
- 960
- 2,100
- 2,680
- 3,060
- 4,020
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