A) \[11.75\]
B) 11
C) 14
D) 13
Correct Answer: C
Solution :
The incorrect sum of observations \[=12.5\times 20=250\] Now, correct sum \[=250-(-15)+15=280\] \[\therefore \] Correct mean \[=\frac{280}{20}=14\]You need to login to perform this action.
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