medium · GMAT Quant
An agricultural drone monitors field moisture levels across two regions. Region 1 contains 16 sample points with mean moisture 40% and mathrmSSW_1 = 300. Region 2 contains 24 sample points with mean moisture 50% and mathrmSSW_2 = 500.
What is the total sum of squares (mathrmSST) across all 40 sample points?
- 800
- 960
- 1760
- 1800
- 2560
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