平均值=(25+28+29+36+36+36+24+27)/8=30.125
方差=((25-30.125)²+(28-30.125)²+(29-30.125)²+(36-30.125)²+(36-30.125)²+(36-30.125)²+(24-30.125)²+(27-30.125)²)/8=22.859
平均值=(25+28+29+36+36+36+24+27)/8=30.125
方差=((25-30.125)²+(28-30.125)²+(29-30.125)²+(36-30.125)²+(36-30.125)²+(36-30.125)²+(24-30.125)²+(27-30.125)²)/8=22.859