Q209
The average of 6 observations is 45.5. If one new observation is added to the previous observations, then the new average becomes 47. The new observation is-
A.
46
B.
50
C.
56
AnswerD.
58
Answer: Option C
Solution
Answer: Option C
Solution:
New observation= (47 × 7) - (45.5 × 6)
= 329 - 273
= 56