#include #include #include #include using namespace std; /* Introducing a series of common statistic terms and their values when given a set of numbers. */ int main() { srand(time(0)); int array_size = 5 + rand() % 20; int array[array_size]; int array2[array_size]; int max_value; int min_value; int elem_count; int count = 0; float sum_of_sqr = 0; float variance; float s_deviation; float mode = 0; float mean = 0; float sum = 0; float median; bool isEven; cout << "Given set values : "; for (int i = 0; i < array_size; i++) { array[i] = 1 + rand() % 20; cout << array[i]; sum += array[i]; sum_of_sqr += pow(array[i], 2); if (i != array_size - 1) { cout << ", "; } } mean = sum/array_size; variance = (sum_of_sqr / array_size) - pow(mean, 2); s_deviation = sqrt(variance); for (int i = 0; i < 25; i++) { for (int j = 0; j < array_size; j++) { if (array[j] == i) { array2[count] = array[j]; count++; } } } cout << endl; cout << "Ascending order : "; for (int i = 0; i < array_size; i++) { cout << array2[i]; if (i != array_size - 1) { cout << ", "; } } if (array_size % 2 == 0) { median = static_cast((array2[array_size/2 - 1]) + (array2[array_size/2])) / 2; isEven = true; } else { median = static_cast(array2[(array_size/2)]); isEven = false; } cout << endl; max_value = array[0]; min_value = array[0]; for (int i = 0; i < array_size; i++) { if (array[i] >= max_value) { max_value = array[i]; } if (array[i] <= min_value) { min_value = array[i]; } } int elem_size = max_value - min_value; cout << endl; cout << "Mean" << endl; cout << " - ( average of all elements ) : " << mean << endl << endl; cout << "Median" << endl; if (isEven) { cout << " - Ans = (" << static_cast(array2[array_size/2 - 1]) << " + " << static_cast(array2[array_size/2]) << ") / " << 2; } else { cout << " - Ans"; } cout << " = " << median << endl << endl; cout << "Maximum" << endl; cout << " - ( maximum value of the set ) : " << max_value << endl << endl; cout << "Minimum" << endl; cout << " - ( minimum value of the set ) : " << min_value << endl << endl; cout << "Range" << endl; cout << " - ( Range of the set ) : " << elem_size << endl << endl; cout << "Variance" << endl; cout << " - Ans = ((Sum of square of elements) / number of elements) - (square of mean)" << endl; cout << " = (" << sum_of_sqr << ") / " << array_size << ") - ("; cout << pow(mean, 2) << ")" << endl; cout << " = " << variance << endl << endl; cout << "Standard deviation" << endl; cout << " - Ans = (square root of corresponding variance)" << endl; cout << " = " << s_deviation << endl; return 0; }

Statistics 101 :D