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QUESTION

# What is the average deviation of 1.76, 2.28, 1.90?

mean deviation =0.2

Compute mean barx

barx=(1.76+2.28+1.90)/3=1.98

Mean deviation =(sum abs(x-barx))/n

Mean deviation =(abs(1.76-1.98)+abs(2.28-1.98)+abs(1.90-1.98))/3

Mean deviation =0.2

God bless....I hope the explanation is useful.