medium · GMAT Quant
A portfolio manager reviews annual return percentages across three asset categories. Category 1 contains 8 funds with a mean return of 6%, Category 2 contains 12 funds with a mean return of 11%, and Category 3 contains 20 funds with a mean return of 16%. If the within-category sum of squares (mathrmSSW) is 890
What is the total sum of squares (mathrmSST) for all 40 funds?
- 1,500
- 610
- 1,860
- 280
- 1,228
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