Q287
If average of 20 observations x1, x2, . . . . . x20 is y, then the average of x1 - 101, x2 - 101, x3 - 101, . . . . . x20 - 101 is :
A.
y - 20
B.
y - 101
AnswerC.
20y
D.
101y
Answer: Option B
Solution
Answer: Option B
Solution:
According to the question,