C Implementation

#include <stdio.h>

#include <math.h>

main()

{

float x, max, min, sum, sum2, mean, variance;

int count;

if( scanf("%f", &x) == EOF )

printf(" 0 data items read\n");

else {

max = min = sum = x;

count = 1;

sum2 = x * x;

while ( scanf("%f", &x) != EOF ) {

++count;

if (x > max) max = x;

if (x < min) min = x;

sum += x;

sum2 += x * x;

}

printf("%d data items read\n", count);

printf("maximum value read = %f\n", max);

printf("minimum value read = %f\n", min);

printf("sum of all values read = %f\n", sum);

mean = sum / count;

printf("mean = %f\n", mean);

variance = sum2/count - mean * mean;

printf("variance = %f\n", variance);

printf("standard deviation = %f\n",

sqrt(variance));

}

}

This is pg96.c

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