Question

Some MATLAB help needed

Write a function named "week1"

> The function should take two inputs:
1) a string containing the subject's code
2) a vector of 5 scores

>The function should return two values:
1) the mean of the 5 scores, after removing the lowest one
2) the standard error of the mean of the 5 scores after removing the lowest one

> The function should also do the following when run:
1) print the following line to the screen
"Working on subject XXXX..." where XXXX is the subject code
2) plot a bar graph with the 5 scores

Answer 1

@ganeshie8 @hartnn @UnkleRhaukus

Answer 2

you have @UnkleRhaukus
also add @dan815

:)

Answer 3

Thanks, I really can't think of a code now!

Answer 4

@Kainui

Answer 5

SE = s/sqrt(n)

Answer 6

where s is the sample standard deviation,
and n is the number of samples

Answer 7

math part is fine dan :)

Answer 8

2) the standard error of the mean of the 5 scores after removing the lowest one

for this part do you still want to use all 5 scores to find your SE just with the mean of 4 highest scores now

Answer 9

Actually main problem is the defining function for getting a string as input

Answer 10

function out=method(string,vector)

Answer 11

ok, so how is this

function [mean, error]=week1(a,b)

Answer 12

ya

Answer 13

function [mean, error]= yourInitials_week1(a,b)
mean = length(a);
error=length(b);

when I run it says:

??? Input argument "a" is undefined.

Error in ==> yourInitials_week1 at 2
mean = length(a);

Answer 14

what did u input for a

Answer 15

still nothing when I call function this error comes up

Answer 16

>> yourInitials_week1
??? Input argument "a" is undefined.

Error in ==> yourInitials_week1 at 2
mean = length(a);

Answer 17

can u please answer this question for me xD

Answer 18

" 2) the standard error of the mean of the 5 scores after removing the lowest one

for this part do you still want to use all 5 scores to find your SE just with the mean of 4 highest scores now
"

Answer 19

4 highest

Answer 20

ok

Answer 21

function [mean1, SE]= yourInitials_week1(subcode,vector)


vector=sort(vector)
vector1=vector(2:length(vector))
mean1=mean(vector1)
SE=std(vector1)/sqrt(length(vector1))

display (subcode)
bar(vector)

Answer 22

maybe you should code the std function yourself

Answer 23

Oh thanks, let me work on it a little