easy · GMAT Quant
An industrial plant analyzes component weight consistency across two assembly lines. Machine 1 produces 25 components with a weight variance of 2 square grams. Machine 2 produces 75 components with a weight variance of 6 square grams. Variance is defined as sum of squared deviations divided by component count.
What is the total sum of squared deviations across all 100 components?
- 4
- 8
- 400
- 500
- 800
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