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11. In a family of seven persons there are three earning members having monthly income of*1800, 1400 and 1000. What is the average income of a member in a family?​

Answer»

Answer:

1400

Step-by-step EXPLANATION:

AVERAGE = sum of all the observations/the total no.of observations

              = (1800+1400+1000)/3

              = (3200+1000)/3

              = 4200/3

Average = 1400

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