数据1,0,2,3,x的平均数是2,即1+0+2+3+x=10,解得x=4,方差S2= 1 5 [(0-2) 2+(1-2) 2+(2-2) 2+(3-2) 2+(4-2) 2]=2,则标准差是s= 2 .故答案为: 2 .
先求出x:(0+1+2+3+x)=2*5=10可解得x=4方差s=((0-2)^2+(1-2)^2+(2-2)^2+(3-2)^2+(4-2)^2)/5=2所以标准差为根号2