If the mean of the data x1,X2,X3,xn ----X is 93, then find the mean of the data x1+2,X2+2,X3+2,...xn+2
Answers
Answered by
2
Step-by-step explanation:
when you add 2 to each no in series then mean also increases by 2
mean = 93+2 = 95
Answered by
2
Answer:
0
Step-by-step explanation:
Mean =
X
ˉ
=
n
x
1
+x
2
+x
3
+.....+x
n
We have been asked for the algebraic sum of the deviations of each of the observations from the mean, i.e. (x
1
−
X
ˉ
)+(x
2
−
X
ˉ
)+(x
3
−
X
ˉ
)+....+(x
n−1
−
X
ˉ
)+(x
n
−
X
ˉ
)=x
1
+x
2
+x
3
+....+x
n
−n
X
ˉ
=n
X
ˉ
−n
X
ˉ
=0
Hence, option 'A' is correct
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