谢谢楼上的回答！

我也觉得不可能不一样，可是我也解释不了。用excel 的过程就不说了，很简单。结果是这样的y =0.6804x+36.596 ,然后R的平方是0,866.

用matlab的程序也很简单，如下

Qpneu = [415.791 428.076 480.733 458.706 513.501 577.299 434.509 488.475 493.450 647.716 484.107 467.104 532.122 544.386 417.158 506.451 473.464 477.322 489.715 503.019 440.685 410.196 463.090 536.942 520.899 395.353 523.195 588.473 634.926 667.527 617.057 368.072]';

Qhyd = [355.783 337.788 344.549 356.575 377.735 412.6 351.6 350.956 360.17 510.509 341.422 337.041 390.588 418.163 340.509 404.215 340.374 344.081 359.135 360.446 356.475 331.405 313.457 402.559 369.769 321.503 382.769 462.586 451.94 487.443 499.51 302.892]';

X=[ones(length(Qpneu),1),Qpneu]

Y=Qhyd

[b,bint,r,rint,stats]=regress(Y,X,0.05)

运行结果就是

b =

42.1466

0.6705

bint =

-10.2148   94.5080

0.5669    0.7741

r =

34.8439

8.6117

-19.9344

6.8609

-8.7197

-16.6320

18.1103

-18.7185

-12.8403

34.0616

-25.3237

-18.3040

-8.3523

10.9995

18.6533

22.4874

-19.2355

-18.1153

-11.3710

-18.9804

18.8442

14.2174

-39.1966

0.3868

-21.6462

14.2678

-10.1857

25.8617

-15.9316

-2.2879

43.6198

13.9490

rint =

-4.9640   74.6518

-33.4588   50.6821

-62.0860   22.2172

-35.7105   49.4324

-51.4405   34.0010

-58.2474   24.9834

-23.6418   59.8623

-60.9816   23.5445

-55.4295   29.7489

-3.7369   71.8601

-67.0729   16.4254

-60.4684   23.8603

-50.9730   34.2683

-31.4119   53.4109

-22.7203   60.0269

-19.5226   64.4973

-61.3900   22.9190

-60.3661   24.1354

-54.0120   31.2701

-61.2429   23.2820

-22.9636   60.6520

-27.2482   55.6830

-79.2208    0.8276

-42.3079   43.0815

-63.6674   20.3750

-26.8069   55.3426

-52.8134   32.4420

-14.8182   66.5416

-55.9222   24.0590

-41.3450   36.7692

6.0416   81.1981

-26.2597   54.1578

stats =

0.8534  174.6247    0.0000  439.7337

也就是说这里的结果是y=0.6705x+42.1466 然后R的平方是0.8354。结果和excel的不一样。

这里的stats的结果最后的2个数有点奇怪，不知道是不是这个原因，还请高手指教！谢谢了！