The standard deviation for the set of number will be found as follows: mean=( 29 + 36 + 41 + 53 + 45 + 30 + 60)/5=294/7=42 next: sum of (x-mean)^2=[(29-42)^2+(36-42)^2+(41-42)^2+(53-42)^2+(45-42)^2+(30-42)^2+(60-42)^2] =804 thus the variance will be: var=(804)/(7-1)=134 thus the standard deviation will be: σ=√134=11.576
