how to do simple linear regression in gui?

clear;clc;

x=[1 3 5 7 10 12 13 16 18 20];

y=[3 2 6 5 8 7 10 8 12 10];

square=x*x’;

d=x*y’;

sx=sum(x);

sy=sum(y);

N=10;

a=(N*d-sx*sy)/(N*square-sx^2);

b=(square*sy-sx*d)/(N*square-sx^2);

a

b

xx=0:25;

yy=a*xx+b;

plot(x,y,’o’,xx,yy)

axis([0 25 0 15])

title(‘data pengamatan’)

xlabel(‘x’)

ylabel(‘y’)

variabel square merupakan penampung dari hasil dari , d adalah , sx adalah jumlah dari x, dan sy adalah jumlah y. Hasil yang ditampilkan MATLAB seperti berikut ini:

a =

0.4446

b =

2.4318

[Image Analyst]

Anything wrong with it? Your plot looks fine:

What do you mean by "in gui"? Your data and fit are showing up in a figure window. What else do you want? Please give explanation or sample screenshot.

Answer 1

[khan]

Perhaps what you want to know is cftool; that You can run from command window (>> cftool %enter) and the input x, and y data. You can also pick the type of fitting.

Hope this help