--%>
Assignment Help - homework help

Problem on Vectors

Create a vector representing x coordinates of a measurement with 20 points between 0 and 10. Create another vector y representing fake measurements which are related to the above x values as y = 2.3 x – 1.2. Next add random (normal, Gaussian) noise to the vector y. Plot on the same graph both versions of vector y in different colors. Next use attached linregr.m function to find a least square fit (linear regression) for your fake experimental data.

E

Expert

Verified

Calculations:

x=0:0.5:10;

y = 2.3*x - 1.2;

x1=x.^2;

xvar=mean(x1)-((mean(x)).^2);

xstd=sqrt(xvar);

noise= 1/(sqrt(2*pi*xstd))*exp(-((x-mean(x)).^2)/(2*xvar));

y1=y+noise

plot(x,y,x,y1,'g');

legend('Normal Y vector','Noise additive Y vector');

XLABEL('x')

YLABEL('Normal Y vector=2.3*x-1.2')

[a, r2]= linregr(x,y);


Results:

502_2013a.jpg


Least square fit Results gives the Least regression for the fake experimental results a = vector of slope, a(1)- → 2.3, and intercept a(2)-→ -1.2
r2 = coefficient of determination = 1

 

2061_2013b.jpg

   Related Questions in Programming Languages

  • Q : Write a program to print out ten random

    Write a program to print out ten random numbers from the following sets: a) {0, 1, 2, 3, 4, 5, ...99, 100} b) {1, 2, 3, 4, 5, 6} c) (10, 20, 30, 40, 50,...990, 1000} d) {-5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5} e) {1.5, 2.0, 2.5, 3.0, 3.5}  

    		•
  • Q : Mission Critical Systems or a real-time

    Determine the important aspect of Mission Critical Systems or a real-time system.

    		•
  • Q : What is Process Process : It is an

    Process: It is an individual thread-of-control to which an execution time slice is assigned by the operating system.

    		•
  • Q : Platform security of S60 third Edition

    How do I know that platform security abilities my S60 3rd Edition application needs?

    		•
  • Q : Who Issues Certificates and how Who

    Who Issues Certificates and How?

    		•
  • Q : Level-triggering interrupt Normal 0

    Normal 0 false false

  • Q : Explain Magic number Magic number : It

    Magic number: It is a constant value with significance within a specific context. For example, the value 12 could mean numerous different things - the number of hrs you have worked today, the number of dollars you are payable by a friend, and so forth

    		•
  • Q : Define Abstract class Abstract class :

    Abstract class: It is a class with the abstract reserved word in its header. The Abstract classes are differentiated by the fact that you might not directly construct objects from them employing the new operator. The abstract class might have zero (0)

    		•
  • Q : Use the Processing program for the

    1. Here is a short program. It prints out the value of a variable "x". Ernie and Bert disagree about what will be printed: Ernie says, the value gets changed in "changeX" so it will print "7", and Bert says, no, when the function exits the changes get reversed and the value goes back to "5". Expl

    		•
  • Q : What is applet? Explain life cycle of

    Ans. Applet: An applet is an application designed to travel over the internet and to be executed on the client machine by a java compatible

    		•