Answer:
B, but I may be wrong.
Step-by-step explanation:
It's 2.5 bc it goes up by 2.5 everytime
4,8,12,16,20,24,28,32,36,40,44,48
The mean is 35/5=7
The variance is the average of the sum of squared differences of each element from the mean:
v=((7-7)^2+(5-7)^2+(11-7)^2+(1-7)^2+(11-7)^2)/5
v=(0+4+16+36+16)/5
v=14.4
