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// Example 9.5
//Write a program to calculate standard deviation of an array values.
//Array elements are read from terminal.Use functions to calulate-
//standard deviation and mean
funcprot(0);
//passing array named 'value' to function std_dev at 'a'
function[std]=std_dev(a,n)
sum1=0;
x=mean1(a,n); //calling mean1() function
for i=1:n
sum1=sum1+(x-a(i))^2;
std=sqrt(sum1/double(n)); //computes standard deviation
end
endfunction
function[x]=mean1(a,n)
sum1=0;
for i=1:n
sum1=sum1+a(i);
x=sum1/double(n); //x contain mean value
end
endfunction
SIZE=int8(5); //size of array
printf("Enter %d float values",SIZE);
for i=1:SIZE
value(i)=input(" "); //entering values in the array
end
printf("Std.deviation is %f",std_dev(value,SIZE)); //calling std_dev() function
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