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OpenStudy (zab505):
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OpenStudy (zab505):
OpenStudy (zab505):
@Hero
OpenStudy (campbell_st):
so you need to sum.... the score - mean so you'll have (3.7 - 11) + (8.2 - 11) + (9.9 -11) + ... you just need to finish and do the calculation
OpenStudy (zab505):
0!
jimthompson5910 (jim_thompson5910):
very good turns out that the sum of all deviations from the mean is always 0 https://proofwiki.org/wiki/Sum_of_Deviations_from_Mean
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OpenStudy (zab505):
Thank you so much!
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