For this case we have that the average is given by:
μ = Σx/N
μ=[tex]\frac {1 + 1.50 + 2.50 + 3} {4}[/tex]
μ =[tex]\frac {8} {4}[/tex]
μ = 2
On the other hand, the deviation is given by:
σ = Root(Σ(x-μ)^2/N)
σ= [tex]\sqrt {\frac {(1-2) ^ 2 + (1.50-2) ^ 2 + (2.50-2) ^ 2 + (3-2) ^ 2)} {4}}[/tex]
σ =[tex]\sqrt {\frac {2.5} {4}}[/tex]
σ =[tex]\sqrt {0.625}[/tex]
σ = 0.790569415
ANswer:
μ = 2
σ= 0.790569415
