initial commit / add all books

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+

+

+//example 4.44

+//calculate mean rainfall;additional guages needed

+clc;funcprot(0);

+//given

+p=[120 95 96 60 65 70 45 21];   //rain guage readings at respective stations

+s=0;

+for i=1:8

+    s=s+p(i);

+end

+pavg=s/8;

+u=0;

+for i=1:8

+    u=u+(p(i)-pavg)^2;

+end

+sx=(u/7)^0.5;

+Cv=sx*100/pavg;

+N=(Cv/13.99)^2;

+N=round(N*100)/100;

+mprintf("mean rainfall=%f cm.",pavg);

+mprintf("\ntotal stations needed=%f.",N);

+//taking N=10

+N=10;

+n=N-8;

+mprintf("\nadditional guages needed=%i.",n);