Cheat mathematics: Simple programs to make my "Probabilty and staditics" problems for the university.

probabilityMedian.js

// Calculate the mean of a set.

var i;
var result = 0;
var data = [1,  2, 3, 4, 5, 6, 7, 8, 9]; // age.
var absFrec = [9, 8, 7, 6, 5, 4, 3, 2, 1]; // absolute frecuency.
var N = 0; // Total value of the set. 

for (i = 0; i < data.length; i++) {
	N += absFrec[i];
	result += (data[i] * absFrec[i]);
}

result = Math.floor(result / N).toFixed(5);
console.log("The mean for your data is " +  result);

// Calculate the mean of a set.

var j = 0;
var medianValue = N/2; // Absolute frecuency of the median
var found = false;
var accAbsFrec = 0;

while (j < absFrec.length && !found) {
	accAbsFrec += absFrec[j]; // Calculate acc abs frecuncy.
	if (accAbsFrec <= medianValue) {
		j++;
	}
	else {
		found = true;
	}
}

console.log("N/2 = " + medianValue);
console.log("The median for your values is " + data[j] );