第ä¸è Linearè¿ç¨
8.1.1 主è¦åè½
è°ç¨æ¤è¿ç¨å¯å®æäºå
æå¤å
ç线æ§åå½åæãå¨å¤å
线æ§åå½åæä¸ï¼ç¨æ·è¿å¯æ ¹æ®éè¦ï¼éç¨ä¸åçéèªåéçæ¹æ³ï¼å¦ï¼éæ¥æ³ãååæ³ãååæ³ï¼çï¼ã
è¿åç®å½
è¿åå
¨ä¹¦ç®å½
8.1.2 å®ä¾æä½
ãä¾8.1ãæå»å¸æµå¾10å3å²å¿ç«¥ç身é«ï¼cmï¼ãä½éï¼kgï¼åä½è¡¨é¢ç§¯ï¼cm2ï¼èµæå¦ä¸ãè¯ç¨å¤å
åå½æ¹æ³ç¡®å®ä»¥èº«é«ãä½é为èªåéï¼ä½è¡¨é¢ç§¯ä¸ºåºåéçåå½æ¹ç¨ã
å¿ç«¥ç¼å·
ä½è¡¨é¢ç§¯ï¼Yï¼
身é«ï¼X1ï¼
ä½éï¼X2ï¼
1
2
3
4
5
6
7
8
9
10
5.382
5.299
5.358
5.292
5.602
6.014
5.830
6.102
6.075
6.411
88.0
87.6
88.5
89.0
87.7
89.5
88.8
90.4
90.6
91.2
11.0
11.8
12.0
12.3
13.1
13.7
14.4
14.9
15.2
16.0
8.1.2.1 æ°æ®åå¤
æ¿æ´»æ°æ®ç®¡ççªå£ï¼å®ä¹åéåï¼ä½è¡¨é¢ç§¯ä¸ºYï¼ä¿ç3ä½å°æ°ï¼èº«é«ãä½éåå«ä¸ºX1ãX2ï¼1ä½å°æ°ãè¾å
¥åå§æ°æ®ï¼ç»æå¦å¾8.1æ示ã
å¾8.1 åå§æ°æ®çè¾å
¥
8.1.2.2 ç»è®¡åæ
æ¿æ´»StatisticsèåéRegressionä¸çLinear...项ï¼å¼¹åºLinear Regression对è¯æ¡ï¼å¦å¾8.2示ï¼ãä»å¯¹è¯æ¡å·¦ä¾§çåéå表ä¸éyï¼ç¹å»Øé®ä½¿ä¹è¿å
¥Dependentæ¡ï¼éx1ãx2ï¼ç¹å»Øé®ä½¿ä¹è¿å
¥Indepentdent(s)æ¡ï¼å¨Methodå¤ä¸æèåï¼å
±æ5个é项ï¼Enterï¼å
¨é¨å
¥éæ³ï¼ãStepwiseï¼éæ¥æ³ï¼ãRemoveï¼å¼ºå¶åé¤æ³ï¼ãBackwardï¼ååæ³ï¼ãForwardï¼ååæ³ï¼ãæ¬ä¾éç¨Enteræ³ãç¹å»OKé®å³å®æåæã
å¾8.2
线æ§åå½åæ对è¯æ¡
ç¨æ·è¿å¯ç¹å»Statistics...é®éæ©æ¯å¦ä½åéçæè¿°æ§ç»è®¡ãåå½æ¹ç¨åºåéçå¯ä¿¡åºé´ä¼°è®¡çåæï¼ç¹å»Plots...é®éæ©æ¯å¦ä½åéåå¸å¾ï¼æ¬ä¾è¦æ±å¯¹æ ååYé¢æµå¼ä½åéåå¸å¾ï¼ï¼ç¹å»Save...é®éæ©å¯¹åå½åæçæå
³ç»ææ¯å¦ä½ä¿åï¼æ¬ä¾è¦æ±å¯¹æ ¹æ®æç¡®å®çåå½æ¹ç¨æ±å¾çæªæ ¡æ£Yé¢æµå¼åæ ååYé¢æµå¼ä½ä¿åï¼ï¼ç¹å»Options...é®éæ©åéå
¥éä¸åé¤çαãβå¼å缺失å¼çå¤çæ¹æ³ã
8.1.2.3 ç»æ解é
å¨ç»æè¾åºçªå£ä¸å°çå°å¦ä¸ç»è®¡æ°æ®ï¼
* * * *
M U L T I P L E
R E G R E S S I O N
* * * *
Listwise Deletion of Missing Data
Equation Number 1
Dependent Variable..
Y
Block Number 1. Method: Enter
X1
X2
Variable(s) Entered on Step Number
1..
X2
2..
X1
Multiple R
.94964
R Square
.90181
Adjusted R Square
.87376
Standard Error
.14335
Analysis of Variance
DF
Sum of Squares
Mean Square
Regression
2
1.32104
.66052
Residual
7
.14384
.02055
F =
32.14499
Signif F = .0003
------------------ Variables in the Equation ------------------
Variable
B
SE B
Beta
T Sig T
X1
.068701
.074768
.215256
.919 .3887
X2
.183756
.056816
.757660
3.234 .0144
(Constant)
-2.856476
6.017776
-.475 .6495
End Block Number
1 All requested variables entered.
ç»ææ¾ç¤ºï¼æ¬ä¾ä»¥X1ãX2为èªåéï¼Y为åºåéï¼éç¨å
¨é¨å
¥éæ³å»ºç«åå½æ¹ç¨ãåå½æ¹ç¨çå¤ç¸å
³ç³»æ°ä¸º0.94964ï¼å³å®ç³»æ°ï¼å³r2ï¼ä¸º0.90181ï¼ç»æ¹å·®åæï¼F=34.14499ï¼P=0.0003ï¼åå½æ¹ç¨ææãåå½æ¹ç¨ä¸ºY=0.0687101X1+0.183756X2-2.856476ã
æ¬ä¾è¦æ±ææ建ç«çåå½æ¹ç¨è®¡ç®Yé¢æµå¼åæ ååYé¢æµå¼ï¼æè°æ ååYé¢æµå¼æ¯æå°æ ¹æ®åå½æ¹ç¨æ±å¾çYé¢æµå¼è½¬åææåæ°ä¸º0ãæ å差为1çæ åæ£æåå¸çYå¼ï¼å¹¶å°è®¡ç®ç»æä¿åå
¥åæ°æ®åºãç³»ç»å°åå§çX1ãX2å¼ä»£å
¥æ¹ç¨æ±Yå¼é¢æµå¼ï¼å³åºä¸pre_1æ ï¼åæ ååYé¢æµå¼ï¼å³åºä¸zpr_1æ ï¼ï¼è¯¦è§å¾8.3ã
å¾8.3 计ç®ç»æçä¿å
æ¬ä¾è¿è¦æ±å¯¹æ ååYé¢æµå¼ä½åéåå¸å¾ï¼ç³»ç»å°ç»å¶çç»è®¡å¾éåChart Carouselçªå£ï¼åå»è¯¥çªå£å¯è§ä¸å¾æ¾ç¤ºç»æã
å¾8.4 对æ ååYé¢æµå¼æä½çæ£æåå¸å¾
温馨提示:内容为网友见解,仅供参考