easy · GMAT Quant
An energy firm audits daily output variation at two solar farms during peak hours. Farm 1 logged 15 operational hours with an output variance of 12 square megawatt-hours. Farm 2 logged 25 operational hours with an output variance of 16 square megawatt-hours. If the sum of squared deviations for each farm is SS = n × v, where n represents hours and v represents variance
What is the sum of the within-group sum of squared deviations for both farms combined?
- 580
- 28
- 1,120
- 400
- 14
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