Find the mean deviation from the median for the
following data (1 - 4) :
1. 9, 12, 18, 3; 5, 3, 10, 12, 21, 12, 21.
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Answer:
The most common representive value of a group of data is the mean or the mean.
Mean = sum of all observation/ number of observations
= 1+9+12+18+3+5+3+10+12+21+12+21 / 12
= 127/12
= 1.58..
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