Question
hi professor gave us 2 question i did question 1 and i post the answer also i only need question 2 thanks please do this
hi professor gave us 2 question i did question 1 and i post the answer also i only need question 2 thanks please do this on matlab software
fcreate.m
close all
clear
clc
filename = 'num.txt';
vec = [3.2 3.1 3.5 3.2 3.0 3.1 3.9 3.6 3.9 3.6 3.9 3.4 3.2 3.3 6.7 3.6 3.7 3.7];
fid = fopen(filename, 'w');
fprintf(fid, '%.1f', vec(1));
for i=2:length(vec)
fprintf(fid, ' %.1f', vec(i));
end
stand.m
close all
clear
clc
filename = 'num.txt';
fid = fopen(filename, 'r');
vector = fscanf(fid, '%f')
vector_sum = sum(vector)
vector_mean = mean(vector)
deviation = vector - vector_mean
output of stand.m
please do question 2 on mat lab
1) Compute Standard Deviation i. Create an m-file called 'fcreate' as illustrated above. Run it to print out the following numbers in a data file called num.txt. 3.2 3.1 3.5 3.2 3.0 3.1 3.9 3.6 3.9 3.6 3.9 3.4 3.2 3.3 6.7 3.6 3.7 3.7 Follow the following steps to create a program called stand.m which computes the standard deviation of ii. the data in num.txt. a) Load the above data file which is now a vector! b) Compute the sum of all of the numbers: Output this value. Use sum( c) Obtain the average (called the mean value in statistics) and output it. Use meanO d) Compute the difference of each value from the average and store it in an array called deviation using a for loop and an expression deviation(i)-num(C)-average; output it along with its number(i) in a table with labeled columns. e) Simultaneously (within the same loop) compute the sum of all the deviations and call it checksum and output it after the loop. Do not use the sumO function. f) Simultaneously sum all the squares of the deviations in the loop and call it sum_squ. g) Compute the average of the sum_squ (Use total number of values-1). This number is called the variance in statistics and output it. Compute the square root of the variance- known as the standard deviation and output it. it with your calculated standard deviation above. Show percent difference if there is a difference. It h) i Finally use the MATLAB function std0 on the row vector of numbers! Output this value and compare should be very close if not 0! 2) Write a program which creates a data file called numbers.txt that you can load following numbers into it. Then write another program that will take the square root of each number saved in numbers.txt and then save them to a file called rootfiin txt. Re sure to save numhers with 4 numbers.txt, the m file created for this task and output file rootfun.txt. decimal precision. Print up the 1) Compute Standard Deviation i. Create an m-file called 'fcreate' as illustrated above. Run it to print out the following numbers in a data file called num.txt. 3.2 3.1 3.5 3.2 3.0 3.1 3.9 3.6 3.9 3.6 3.9 3.4 3.2 3.3 6.7 3.6 3.7 3.7 Follow the following steps to create a program called stand.m which computes the standard deviation of ii. the data in num.txt. a) Load the above data file which is now a vector! b) Compute the sum of all of the numbers: Output this value. Use sum( c) Obtain the average (called the mean value in statistics) and output it. Use meanO d) Compute the difference of each value from the average and store it in an array called deviation using a for loop and an expression deviation(i)-num(C)-average; output it along with its number(i) in a table with labeled columns. e) Simultaneously (within the same loop) compute the sum of all the deviations and call it checksum and output it after the loop. Do not use the sumO function. f) Simultaneously sum all the squares of the deviations in the loop and call it sum_squ. g) Compute the average of the sum_squ (Use total number of values-1). This number is called the variance in statistics and output it. Compute the square root of the variance- known as the standard deviation and output it. it with your calculated standard deviation above. Show percent difference if there is a difference. It h) i Finally use the MATLAB function std0 on the row vector of numbers! Output this value and compare should be very close if not 0! 2) Write a program which creates a data file called numbers.txt that you can load following numbers into it. Then write another program that will take the square root of each number saved in numbers.txt and then save them to a file called rootfiin txt. Re sure to save numhers with 4 numbers.txt, the m file created for this task and output file rootfun.txt. decimal precision. Print up theStep by Step Solution
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