Variance = sigma((value - mean)2) / (# values - 1) Mean = (0+1+1+2)/4 = 1 Variance = ((0-1)2+(1-1)2+(1-1)2+(2-1)2)/(4-1) Variance = (1+0+0+1)/3 Variance = 2/3 Variance ~ 0.667

Z is a variable with mean 0 and variance 1.

Z is a variable with mean 0 and variance 1.

Z is a variable with mean 0 and variance 1.

Z is a variable with mean 0 and variance 1.

The variance is: 0.666666666667

Yes. If the variance is less than 1, the standard deviation will be greater that the variance. For example, if the variance is 0.5, the standard deviation is sqrt(0.5) or 0.707.

The variance is: 58.0