To find and print the standard deviation.

Write a program in C to input 12 numbers and then calculate, print the standard deviation of these numbers.
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#include<stdio.h> #include<conio.h> #include<math.h> #define N 12 void main( ) { float x, sx, sxx, sd, a; sx = sxx = 0; for (a=1; a<=N; a++) { printf("Enter value of x"); scanf("%f", &x); sx = sx + x; sxx = sxx + x * x; } sd = sqrt(sxx / N - (sx/N) * (sx/N)); printf("Standard Deviation is %.2f\n", sd); }

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To find and print Karl pearson's correlation coefficient.

Walk A Mile In My ShoesWrite a program in C to input 10 pairs of x and y values and then print Karl pearson's correlation coefficient.
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#include<stdio.h> #include<conio.h> #include<math.h> #define N 10 void main( ) { int i; float x, y, sx=0, sy=0, sxx=0, syy=0, sxy=0, a, b, c, r; for(i=0; i { printf("Enter values for x & y"); scanf("%f %f", &x, &y); sx = sx + x; sy = sy + y; sxx = sxx + x * x; syy = syy + y * y; sxy = sxy + x * y; } a = sxy-sx*sy/N; b = sqrt(sxx-sx*sx/N); c = sqrt(syy-sy*sy/N); r = a / (b*c); printf("Coefficient of correlation is %f\n", r); }

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To find and print the regression coefficient.

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Write a program in C to input 25 pair of x & y and calculate and print the regression coefficient (b).

#include<stdio.h> #include<conio.h> #include<math.h> #define N 25 void main( ) { int i, x, y; float sx=0, sy=0, sxy=0, syy=0, a, b, c; clrscr( ); for(i=1; i<=N; i++) { printf("Input values of x & y pairwise\n"); scanf("%d %d", &x, &y); sx = sx + x; sy = sy + y; sxy = sxy + x * y; syy = syy + y * y; } a = N*sxy - sx*sy; c = N*syy - sy*sy; b = a/c; printf("\n The regression coefficient is %f\n", b); }

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To find and print Correlation of coefficient.

The Blind SideWrite a program in C to input 5 integer values of x & y and to calculate and print the coefficient of correlation between x & y.

#include<stdio.h> #include<conio.h> #include<math.h> void main( ) { int x, y, i; float sx=0, sy=0, sxx=0, syy=0, sxy=0, a, b, c, r; clrscr( ); for(i=1; i<=5; i++) { printf("Input values of x and y pairwise\n"); scanf("%d %d", &x, &y); sx = sx + x; sy = sy + y; sxx = sxx + x * x; syy = syy + y * y; } a = sxy - (sx * sy) / 5; b = sqrt(sxx - (sx * sx) / 5 ); c = sqrt(syy - (sy * sy) / 5 ); r = a / (b *c); printf("The correlation coefficient = %f\n", r); }

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To find and print mean and mean deviation.

The Big Short: Inside the Doomsday Machinewrite a program in C to input 15 observations and then find and print mean and mean deviation from mean where, mean = SX/15 and mean deviation from mean = S |X-mean| / 15.

#include<stdio.h> #include<conio.h> #include<math.h> void main( ) { int a, x[15]; float tot=0, mdt=0, d, m, md; printf("Input 15 values of x, one at a time\n"); for(a=0; a<15; a++) { scanf("%d", &x[a]); tot = tot+x[a]; } m = tot / 15; for(a=0; a<15; a++) { d = x[a] - m; if (d < 0 ) d = -d; mdt = mdt + d; } md = mdt / 15; printf("\n Mean = %f\n", m); printf("Mean deviation = %f\n", md); }

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To find and print mean

Kindle Wireless Reading Device (6" Display, Global Wireless, Latest Generation)Input 10 integers values of x and calculate and print its mean(m).

#include<stdio.h> #include<conio.h> #include<math.h> void main( ) { int i, x[10]; float s1=0, m; clrscr( ); printf("Input 10 values of x, one at a time\n"); for(i=1; i<=10; i++) { scanf("%d", &x[i]); s1 = s1+x[i]; } m = s1/10; printf("\n The mean is %f\n", m); }

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To find and print mean and standard deviation.

Write a program in C to input 5 integer values (x) and to find and print their mean (m) and standard deviation (sd).

#include<stdio.h> #include<conio.h> #include<math.h> void main( ) { int i, x[5]; float s1=0, s2=0, d, m, sd; clrscr( ); printf("Input 5 values of x, one at a time\n"); for(i=1; i<=5; i++) { scanf("%d", &x[i]);  s1 = s1+x[i];  }  m = s1/5; for(i=1; i<=5; i++) { d = s[i] - m; s2 = s2+d*d; } sd = sqrt(s2/5); printf("\n The mean is %f\n", m); printf("The standard deviation is %f\n", sd); }

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