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Find the mean deviation from the mean for the following data: 5 2 9 10 12 15 8 6 2 2 2 6

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`((x),(5),(7),(9),(10),(12),(15),(Total))` `((f),(8),(6),(2),(2),(2),(6),(26))` `((cf),(40),(42),(18),(20),(24),(90),(234))` `((d(x-9)),(4),(2),(0),(1),(3),(6),(16))` `((fd),(32),(12),(0),(2),(6),(3),(3))`
Mean`=(234)/(26)=9`
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