All you have to do is divide 48 by 3 and you should get exactly 16.
I don’t know the rest, but I think the 1st and 3rd ones are true! I hope this helps some, I’m sorry if it’s incorrect!
The answer is D it shrinks to 35
The mean is 15.25
12 + 24 + 8 + 17 = 61
Divide that by the total number of variables (4) to get 15.25.
