1diff --git a/src/RawFormulas/RawFormulas.ts b/src/RawFormulas/RawFormulas.ts
  2index 385da38..74cadf6 100644
  3--- a/src/RawFormulas/RawFormulas.ts
  4+++ b/src/RawFormulas/RawFormulas.ts
  5@@ -40,6 +40,29 @@ function flatten(values: Array<any>) : Array<any> {
  6   }, []);
  7 }
  8 
  9+/**
 10+ * Converts string values in array to 0
 11+ * @param arr to convert
 12+ * @returns {Array} array in which all string values have been converted to 0.
 13+ */
 14+function stringValuesToZeros(arr: Array<any>) : Array<any> {
 15+  var toReturn = [];
 16+  for (var i = 0; i < arr.length; i++) {
 17+    if (typeof arr[i] !== "string") {
 18+      toReturn.push(arr[i]);
 19+    } else {
 20+      toReturn.push(0);
 21+    }
 22+  }
 23+  return toReturn;
 24+}
 25+
 26+/**
 27+ * Calculates the average of the magnitudes of deviations of data from a dataset's mean.
 28+ * @param values The value(s) or range(s)
 29+ * @returns {number} average of the magnitudes of deviations of data from a dataset's mean
 30+ * @constructor
 31+ */
 32 var AVEDEV = function (...values) {
 33   checkArgumentsAtLeastLength(values, 1);
 34 
 35@@ -63,7 +86,6 @@ var AVEDEV = function (...values) {
 36     return valueToNumber(value);
 37   }).concat(nonArrayValues);
 38 
 39-
 40   // Calculating mean
 41   var result = 0;
 42   var count = 0;
 43@@ -79,9 +101,33 @@ var AVEDEV = function (...values) {
 44   return SUM(flatValues) / flatValues.length;
 45 };
 46 
 47+/**
 48+ * Returns the numerical average value in a dataset, coercing text values in ranges to 0 values.
 49+ * @param values value(s) or range(s) to consider when calculating the average value.
 50+ * @returns {number} the numerical average value in a dataset
 51+ * @constructor
 52+ */
 53+var AVERAGEA = function (...values) {
 54+  checkArgumentsAtLeastLength(values, 1);
 55+  var result = 0;
 56+  var count = 0;
 57+  for (var i = 0; i < values.length; i++) {
 58+    if (values[i] instanceof Array) {
 59+      if (values[i].length === 0) {
 60+        throw new CellError(ERRORS.REF_ERROR, "Reference does not exist.");
 61+      }
 62+      var filtered = stringValuesToZeros(values[i]);
 63+      result = result + SUM.apply(this, filtered);
 64+      count += filtered.length;
 65+    } else {
 66+      result = result + valueToNumber(values[i]);
 67+      count++;
 68+    }
 69+  }
 70+  return result / count;
 71+};
 72 
 73 var ACCRINT = Formula["ACCRINT"];
 74-var AVERAGEA = Formula["AVERAGEA"];
 75 var AVERAGEIF = Formula["AVERAGEIF"];
 76 var BASE = Formula["BASE"];
 77 var BIN2DEC = Formula["BIN2DEC"];
 78diff --git a/tests/FormulasTest.ts b/tests/FormulasTest.ts
 79index 90ebb5c..b7b6a90 100644
 80--- a/tests/FormulasTest.ts
 81+++ b/tests/FormulasTest.ts
 82@@ -230,7 +230,28 @@ catchAndAssertEquals(function() {
 83   AVERAGE([]);
 84 }, ERRORS.REF_ERROR);
 85 
 86-assertEquals(AVERAGEA(10, 20, 4.1), 11.366666666666667);
 87+
 88+// Test AVERAGEA
 89+assertEquals(AVERAGEA(1, 2, 4, 55), 15.5);
 90+assertEquals(AVERAGEA(1, 2, 4, "55"), 15.5);
 91+assertEquals(AVERAGEA(1, 2, 4, 55, false), 12.4);
 92+assertEquals(AVERAGEA(1, 2, 4, 55, true), 12.6);
 93+assertEquals(AVERAGEA(1, 2, 4, 55, 0), 12.4);
 94+assertEquals(AVERAGEA(1, 2, 4, 55, 1), 12.6);
 95+catchAndAssertEquals(function() {
 96+  AVERAGEA(1, 2, 4, "str");
 97+}, ERRORS.VALUE_ERROR);
 98+assertEquals(AVERAGEA([1, 2, 4, 55, "str"]), 12.4);
 99+assertEquals(AVERAGEA([1, 2, 4, 55, "22"]), 12.4);
100+assertEquals(AVERAGEA([1, 2, 4, 55, 0]), 12.4);
101+assertEquals(AVERAGEA([0]), 0);
102+catchAndAssertEquals(function() {
103+  AVERAGEA();
104+}, ERRORS.NA_ERROR);
105+catchAndAssertEquals(function() {
106+  AVERAGEA([]);
107+}, ERRORS.REF_ERROR);
108+
109 
110 assertEquals(AVERAGEIF([1, 5, 10], '>2'), 7.5);
111