数据分析与建模实验指导书 - 百度文库

ʵϰ ɷַ͵ط

һʵĿ

1.MATLABɷķ㲽衣 2.˽MATLABطķ㲽衣 ʵ

1.ЭΪS=[2,2,-2;2,5,-4;-2,-4,5]XĸɷԼɷݵĹʡ clear

S=[2,2,-2;2,5,-4;-2,-4,5]; %SʾЭ [PC,vary,explained]=pcacov(S) %ɷַ

PC=

-0.3333 0 0.9428 -0.6667 0.7071 -0.2357 0.6667 0.7071 0.2357 vary=

10.0000 1.0000 1.0000 explained= 83.3333 8.3333 8.3333

2.ݵӰҹʳȫҪ¼:ЧʳͶ룬ũҵͶũõ ũҵеܶũҵʩXʾ

ڸָĵλͬҸָķܴȶݽٵı任任òñ׼ȻԱ׼ݽɷ clear

X=[4740.31 11346.60 178.20 221.76 33336.00 844.50 28707.70 647.58 4782.21 11231.40 278.10 243.55 34186.30 963.20 29388.60 701.28 4859.01 11056.00 259.00 269.04 34037.00 1106.90 30308.40 732.55 4872.79 11050.90 231.30 323.42 33258.20 1244.80 31816.60 787.98 4875.91 10854.40 313.80 399.70 32690.30 1473.90 33802.50 829.53 4928.12 11006.00 222.70 430.22 32335.00 1655.70 36118.10 898.40 5038.14 11254.80 212.30 510.07 32260.40 1812.70 38546.90 957.00 5123.85 11291.20 303.10 560.77 32434.90 1980.10 42015.60 995.23 5229.56 11378.70 251.80 626.02 32626.40 2042.10 45207.70 1020.88 5315.80 11316.10 267.30 677.46 32911.80 2173.40 48996.10 1031.08 5382.00 10846.30 343.70 766.89 32798.00 2421.30 52573.60 1036.63 5424.90 10608.00 317.90 917.96 32451.00 2610.80 55172.10 1063.28 5435.50 10389.10 271.60 1102.70 31991.00 2993.40 57929.90 1083.08

5401.42 9941.00 325.20 1134.86 31259.60 3432.90 60386.50 1102.90 5447.80 10160.60 163.00 1693.79 30596.00 3933.00 64027.90 1157.30 5502.93 10427.80 199.70 1792.40 29975.50 4375.70 68397.80 1191.45 5575.05 10495.80 246.30 2161.35 28886.35 4895.80 72522.10 1231.90 5651.83 10563.80 250.60 3404.70 22543.4 5509.90 76589.60 1276.70 5847.17 10679.30 222.80 4544.01 20078.6 5713.20 82190.41 1309.19]; %ٻ

X1=zscore(X); %ʽ5.14ݱ׼ %ɷݷ

[pc,la,tent]=princomp(X1) %ɷݷpcla÷־tentֵ tents=sum(tent) %ֵܺ

gxl= tent/ tents %ɷݹ pc =

0.3933 -0.1518 -0.0544 0.3944 0.5494 0.3701 -0.1396 0.4533 -0.2821 0.3173 -0.7669 0.4403 0.0325 -0.1907 -0.0141 -0.0121 -0.0479 -0.8701 -0.4379 -0.1998 -0.0337 -0.0838 0.0257 -0.0115 0.3856 0.1952 -0.2572 -0.3364 0.2998 0.0210 0.7181 -0.1668 -0.3605 -0.2487 0.3850 0.4799 0.2640 -0.3102 0.5109 -0.0512 0.4083 0.0358 0.0265 -0.0014 -0.2123 -0.7233 0.0088 0.5128 0.4070 -0.0643 0.0422 0.1814 0.2707 -0.3433 -0.3636 -0.6872 0.3905 -0.1175 -0.0151 0.4841 -0.6466 0.2861 0.2659 -0.1692 tent =

5.9106 1.1327 0.6118 0.2842 0.0347 0.0216 0.0039 0.0005 gxl =

0.7388 0.1416 0.0765 0.0355 0.0043 0.0027 0.0005 0.0001

3.ɷַڷ.ԭʼͼɷֵ÷ͼ clear

apf=[1.14,1.78;1.18,1.96;1.20,1.86;1.26,2.;1.28,2;1.30,1.96];

af=[1.24,1.72;1.36,1.74;1.38,1.64;1.38,1.82;1.38,1.90;1.40,1.70;1.48,1.82;1.54,1.82;1.56,2.08]; x=[1.24,1.8;1.28,1.84; 1.4,2.04]; % ԭʼ

subplot(2,1,1)

plot(apf(:,1),apf(:,2),'*',af(:,1),af(:,2),'or',x(:,1),x(:,2),'p') % ԭʼͼ [c1,s1,l1,t1]=princomp([apf;af;x]); % ɷֵ÷s1 subplot(2,1,2),

plot(1:6,s1(1:6,2),'*') hold on

plot(7:15,s1(7:15,2),'or') hold on

plot(16:18,s1(16:18,2),'p')

legend('apf','af','x') % ɷֵ÷ͼ hold on

plot(0:18,0*ones(1,19),'-')

4.ijֲ20˲ָ꣺أweight Χwaist pulseѵָ꣺ϣchins situps Ծjumps ڱ5.1Էԡ Obs weight waist pulse chins situps jumps 1 191 36 50 5 162 60 2 189 37 52 2 110 60 3 193 38 58 12 101 101 4 162 35 62 12 105 37 5 189 35 46 13 155 58 6 182 36 56 4 101 42 7 211 38 56 8 101 38 8 167 34 60 6 125 40 9 176 31 74 15 200 40 10 154 33 56 17 251 250 11 169 34 50 17 120 38 12 166 33 52 13 210 115 13 154 34 64 14 215 105 14 247 46 50 1 50 50 15 193 36 46 6 70 31 16 202 37 62 12 210 120 17 176 37 54 4 60 25 18 157 32 52 11 230 19 156 33 54 15 225 20 138 33 68 2 110 clear

DATA=[191 36 50 5 162 60 189 37 52 2 110 60 193 38 58 12 101 101 162 35 62 12 105 37 189 35 46 13 155 58 182 36 56 4 101 42 211 38 56 8 101 38 167 34 60 6 125 40 176 31 74 15 200 40 154 33 56 17 251 250 169 34 50 17 120 38 166 33 52 13 210 115 154 34 64 14 215 105 247 46 50 1 50 50 193 36 46 6 70 31 202 37 62 12 210 120 176 37 54 4 60 25 157 32 52 11 230 80 156 33 54 15 225 73 138 33 68 2 110 43];

X=DATA(:,1:3); %һ۲ֵ Y=DATA(:,4:6); %ڶ۲ֵ [A,B,r,U,V,stats] = canoncorr(X,Y) A=

-0.0314 -0.0763 0.0077 0.4932 0.3687 -0.1580 -0.0082 -0.0321 -0.1457 B=

-0.0661 -0.0710 0.2453 -0.0168 0.0020 -0.0198 0.0140 0.0207 0.0082 r=

0.7956 0.2006 0.0726 ʵϰ

1.X=X1X2X3TЭϵֱΪ

80 73 43

?14??10.8??????R??425??0.81??

????ֱ?RXĸɷԼɷֵĹʲȽϲ

ϵͷ779662525#qq.com(#滻Ϊ@)