1218.
1) 3, 8, 5, 6;
X―=3+8+5+64=224=5,5.
=2,52+2,52+0,52+0,524=
=6,25+6,25+0,25+0,254=
=134=3,25.
σ=D=3,25≈1,8.
2) 4, 7, 3, 9;
X―=4+7+3+94=234=5,75.
=22,744≈5,68.
σ=D=5,68≈2,38.
3) 4, 1, 3, 2, 2;
X―=4+1+3+2+25=125=
=2,4.
=5,25=1,04.
σ=D=1,04≈1,02.
4) 3, 2, 1, 1, 5;
X―=3+2+1+1+55=125=
=11,25=2,24.
σ=D=2,24≈1,49.
5) 2, −1, 3, −2, 5;
X―=2−1+3−2+55=75=1,4.
=33,25=6,64.
σ=D=6,64≈2,57.
6) −2, 4, −3, −1, 6;
X―=−2+4−3−1+65=45=
=0,8.
=62,85=12,56.
σ=D=12,56≈3,54.