a) 5+2+3+4+1/5 = 15/5 = 3
b) σ^2 = (5-3)^2 + (2-3)^2 + (3-3)^2 + (4-3)^2 + (1+3)^2 /5
= 4+1+0+1+16/5 = 22/5 = 4,4
c) σ=√σ^2 = √4,4 = 2,10
d) 1,2,3,4,5
M = 3
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a) 5+2+3+4+1/5 = 15/5 = 3
b) σ^2 = (5-3)^2 + (2-3)^2 + (3-3)^2 + (4-3)^2 + (1+3)^2 /5
= 4+1+0+1+16/5 = 22/5 = 4,4
c) σ=√σ^2 = √4,4 = 2,10
d) 1,2,3,4,5
M = 3