The Average of six observation is 12. The average decreases by 1 when a new observation is included. What is the seventh observation?

The Average of six observation is 12. The average decreases by 1 when

1.	The Average of six observation is 12. The average decreases by 1 when a new observation is included. What is the seventh observation?
A.	1
B.	3
C.	5
D.	6
Answer» D. 6

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The Average of six observation is 12. The average decreases by 1 when a new observation is included. What is the seventh observation?

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