variance function Null safety

num variance(
  1. List values
)

Computes the variance of the values in array.

Implementation

num variance(List<dynamic> values) {
  var mean = arrayMean(values);
  num sum = 0;
  for (var i = 0; i < values.length; i++) {
    sum += math.pow(values[i] - mean, 2);
  }
  return sum / values.length;
}