Standard Deviation, σ: 1.5
Count, N: 10
Sum, Σx: 15
Mean, μ: 1.5
Variance, σ2: 2.25
Steps
σ2 =
Σ(xi - μ)2
N
=
(0 - 1.5)2 + ... + (5 - 1.5)2
10
=
22.5
10
= 2.25
σ = √2.25
= 1.5
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5) -4+(-3) = -7 because you got -4 and then 3 more negatives so you got 7 negatives
6) -3+2= -1 because you got -3 and then 2 positives , now you have only one negative left
7)5+(-3) = 2 because you have 5 pozitives and then 3 negatives happen, now you got only 2 positives remaining...and so on