Question

Seven of the eight numbers in a distribution are $11,16,6,10,13,11,13.$
Given that the mean of the distribution is $12$,if 12 will be included then find the new mean of the distribution.

• A. $12$
• B. $11.5$
• C. $16$
• D. $12.2$

Answer 1

The correct option is B $11.5$

Meen=$\frac{6+10+11+11+13+13+13+16+12}{8}=11.6$
Because medien is 12=$\frac{11+13}{2}=12$
Meen=$\frac{6+10+11+11+13+13+13+16+12}{8}=11.6$