Statistical Analyst

Yishun, Singapore

Clem R

Master’s Degree in Information Science, Singapore University of Technology and Design

Profession

Online data analysis assignment helper and Matlab homework expert

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I have over 7 years of experience as a data analyst, something that helped me land a career as a data analysis homework helper at Matlab Assignment Experts. Throughout the period I have been with this company, I have delivered numerous projects to students from all over the world. Among the topics on which I have provided expert Matlab assignment help include data visualization, statistical analysis, workflows automation, data mining, and data cleaning.

Transfer Function

clear all,clc
% tests:
B1=[1 -0.8];
A1=[1 1.5 0.9];
Ts=1;

% System is table in z if all poles lie inside a circle of unit 1

p=roots(A1);

if(abs(p)<=1), 
    disp(['Z domain system is stable']); 
else disp(['Z domain system is Not stable'])
end

% For Time domain we will convert form d2c
sys=d2c(tf(B1,A1,Ts));

[numc,denc]=tfdata(sys,'v');

pc=roots(denc);

if real(pc)<0
    disp(['Time Domain system is stable']);
else
    disp(['Time Domain system is not stable']);
end

% zero-state response vs. zero-input response

BB=[2.24 2.49 2.24];
AA=[1 -0.4 0.75]; 
n=-2:1:20;
% The filter will be used for the following initial conditions
x=(n>=0);
b1=2.24; b2=2.49; b3=2.24;
a1=1; a2=-0.4; a3=0.75;

zi2=[-2*a1-1*a2,b1*0-a2*2];

y=filter(BB,AA,x,zi2);

stem(n,y); grid on
title('The response with initial condition of 2nd order system')

Calculating Area using Matlab

% area.m
% computes the area and perimeter of a rectangle

% Asks for the length of the rectangle 
L = input( ' What is the length of the rectangle ? ' );

% Asks for the width of the rectangle 
W = input( ' What is the width of the rectangle ? ' );

% computes the area and perimeter
Area = L * W ;
Perimeter = 2*(L + W);


% displays the area and perimeter
fprintf('The area of the rectangle is: %g \n', Area)
fprintf('The perimeter of the rectangle is: %g \n', Perimeter)


% avg.m
% computes the average value of three numbers

% Asks for the three numbers whose average is to be found
N1 = input( ' What is the first number, N1 ? ' );
N2 = input( ' What is the second number, N2 ? ' );
N3 = input( ' What is the third number, N3 ? ' );


% computes the average value of the three numbers
AverageN = (N1 + N2 + N3)/3  ;

% displays the average value of the three numbers
fprintf('The average of the three numbers is: %g \n', AverageN)



% circle.m 
% finds the area of a circle with a known diameter

% Asks for diameter of the circle
d = input( ' What is the diameter of the circle ? ' );

% Find the area of a circle 
Area = pi * d^2 /4 ;


% displays the area and perimeter
fprintf('The area of the circle is: %g \n', Area)



% polynom
% solves for the roots of a 2nd order polynomial equation using quadratic
% formula



% asks for the values of a, b and c 
a = input('What is the value of a ?');
b = input('What is the value of b ?');
c = input('What is the value of c ?');


% computes the roots s1 and s2

s1 = (-b + sqrt(b^2 - 4*a*c))/(2*a);
s2 = (-b - sqrt(b^2 - 4*a*c))/(2*a);


% displays the roots s1 and s2
fprintf('The roots of the polynomial are: s1 = %g  and s2 = %g \n', s1,s2)

% rctime.m
% computes the charging voltage for a resistor and capacitor circuit 


% asks for the values of Vcc, tmax, R and C
Vcc = input('What is the value of Vcc ?');
R = input('What is the resistor value, R ?');
C = input('What is the capacitor value, C ?');
tmax = input('What is the maximum time for evaluation, tmax ?');



t = linspace(0,tmax,100);

% computes V 
V = Vcc*(1- exp(-t/(R*C)));

% plots V vs t.
plot(t,V, 'r')
xlabel('t')
ylabel('V')


% resistor.m
% computes the Rs and Rp equivalent values of two resistors


% Asks for the two resistor resistance values 
R1 = input( ' What is the first resistor value, R1 ? ' );
R2 = input( ' What is the second resistor value, R2 ? ' );

% computes Rs and Rp values

Rs = R1 + R2;

Rp = R1* R2/(R1 + R2);


% displays the Rs and Rp values with comment
fprintf('The Rs value for series connection is: %g \n', Rs)
fprintf('The Rp value for parallel connection is: %g \n', Rp)