用matlab做一个合适的回归模型,y:196,63,252,84,126,14,49,49,266,49,105,98,77,14,56,245,133,133x1:66.290,40.964,72.996,45.010,57.204,26.852,38.122,35.840,75.796,37.408,54.376,46.186,46.130,30.366,39.060,79.380,52.766,55.916x2:7,5,10,6,4,5,4,6
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/14 14:14:28
![用matlab做一个合适的回归模型,y:196,63,252,84,126,14,49,49,266,49,105,98,77,14,56,245,133,133x1:66.290,40.964,72.996,45.010,57.204,26.852,38.122,35.840,75.796,37.408,54.376,46.186,46.130,30.366,39.060,79.380,52.766,55.916x2:7,5,10,6,4,5,4,6](/uploads/image/z/4341352-40-2.jpg?t=%E7%94%A8matlab%E5%81%9A%E4%B8%80%E4%B8%AA%E5%90%88%E9%80%82%E7%9A%84%E5%9B%9E%E5%BD%92%E6%A8%A1%E5%9E%8B%2Cy%3A196%2C63%2C252%2C84%2C126%2C14%2C49%2C49%2C266%2C49%2C105%2C98%2C77%2C14%2C56%2C245%2C133%2C133x1%3A66.290%2C40.964%2C72.996%2C45.010%2C57.204%2C26.852%2C38.122%2C35.840%2C75.796%2C37.408%2C54.376%2C46.186%2C46.130%2C30.366%2C39.060%2C79.380%2C52.766%2C55.916x2%3A7%2C5%2C10%2C6%2C4%2C5%2C4%2C6)
用matlab做一个合适的回归模型,y:196,63,252,84,126,14,49,49,266,49,105,98,77,14,56,245,133,133x1:66.290,40.964,72.996,45.010,57.204,26.852,38.122,35.840,75.796,37.408,54.376,46.186,46.130,30.366,39.060,79.380,52.766,55.916x2:7,5,10,6,4,5,4,6
用matlab做一个合适的回归模型,
y:196,63,252,84,126,14,49,49,266,49,105,98,77,14,56,245,133,133
x1:66.290,40.964,72.996,45.010,57.204,26.852,38.122,35.840,75.796,37.408,54.376,46.186,46.130,30.366,39.060,79.380,52.766,55.916
x2:7,5,10,6,4,5,4,6,9,5,2,7,4,3,5,1,8,6
x1与y 存在着二次关系,x2对y有线性关系.
通过那些数据建立一个合适的回归模型,
哪位高手会的麻烦你把要在MATLAB输入的代码和结果转上来
先谢过了
用matlab做一个合适的回归模型,y:196,63,252,84,126,14,49,49,266,49,105,98,77,14,56,245,133,133x1:66.290,40.964,72.996,45.010,57.204,26.852,38.122,35.840,75.796,37.408,54.376,46.186,46.130,30.366,39.060,79.380,52.766,55.916x2:7,5,10,6,4,5,4,6
clear;clc;
y=[...
196,63,252,84,126,14,49,49,266,49,105,98,77,14,56,245,133,133 ];
x1=[
66.290,40.964,72.996,45.010,57.204,26.852,38.122,35.840,75.796,37.408,54.376,46.186,46.130,30.366,39.060,79.380,52.766,55.916 ];
x2=[7,5,10,6,4,5,4,6,9,5,2,7,4,3,5,1,8,6 ];
a=polyfit(x1,y,2)
b=polyfit(x2,y,1)
f1=vpa(poly2sym(a,'x'),4)
f2=vpa(poly2sym(b,'x'),4)
结果:
a =
0.0302 1.7886 -60.5239
b =
13.5218 38.7434
f1 =
.3025e-1*x^2+1.789*x-60.52
f2 =
13.52*x+38.74
>>
楼主怎么没悬赏分啊?怪不得没人做.唉,看到MATLAB题目就冲动,就做回好人吧,