Answer:
A
Step-by-step explanation:
The mean is the sum of all the values divided by the number of values.
Mean = [tex]\frac{34+75+26+81+65+38+49}{7}=52.57[/tex]
When 1213 is added to the data set, new mean is:
New Mean = [tex]\frac{34+75+26+81+65+38+49+1213}{8}=197.625[/tex]
Definitely, the mean increases. Correct answer is A
