Answer:
The mean increases.
Step-by-step explanation:
Given data set is :
34, 75, 26, 81, 65, 38, 49
Arranging in ascending order, we have
26, 34, 38, 49, 65, 75, 81
Mean = [tex]\frac{26+34+38+49+65+75+81 }{7}[/tex]
= [tex]\frac{368}{7}=52.57[/tex]
When 894 is included in the data, the mean becomes
[tex]\frac{368+894}{8}=157.75[/tex]
So, the mean increases.
