   count = data.length
   sum = 0
   for e in data
-    sum += Math.pow(e - avg, 2)/count
+    sum += Math.pow(e - avg, 2) / count
   return Math.sqrt(sum)
 
 
 # Round a value to given number of decimals.
 roundTo = (value, decimals) ->
   d = Math.pow(10, decimals)
-  return Math.round(value * d)/d
+  return Math.round(value * d) / d
 
 
 # Calculate percentile A from a sorted data set.

  dist = normalDist(grouped.buckets, avg, dev)

  len = dist.length
  mul = maxArr(grouped.frequency)/maxArr(dist)/2
  result = []
  for i in [0...len]
    result.push(


    for b in x
        d1 = b - mean
        v = c1 * Math.pow(Math.E, -(d1 * d1) / c2)
        normDist.push(v)
  else if x.length > 0
    # x has values, but std is zero.
