1diff --git a/package.json b/package.json
 2index 0d8f309..fda98d1 100644
 3--- a/package.json
 4+++ b/package.json
 5@@ -5,7 +5,8 @@
 6   "scripts": {
 7     "clean": "rm -rf output/* && rm -rf test_output/*",
 8     "build": "tsc && cp lib/parser.js output/",
 9-    "test": "./tests.sh"
10+    "test": "./tests.sh",
11+    "test:quiet": "./tests.sh | grep -v Test:"
12   },
13   "author": "vogtb <bvogt at gmail.com>",
14   "license": "MIT",
15diff --git a/src/Formulas/Statistical.ts b/src/Formulas/Statistical.ts
16index 593a019..32e4baa 100644
17--- a/src/Formulas/Statistical.ts
18+++ b/src/Formulas/Statistical.ts
19@@ -805,12 +805,11 @@ var MINA = function (...values) : number {
20  * average instead.
21  * @returns {number}
22  * @constructor
23- * TODO: This needs to take nested range values.
24  * TODO: This needs to also accept a third parameter "average_range"
25  */
26 var AVERAGEIF = function (...values) {
27   ArgsChecker.checkLength(values, 2);
28-  var range = values[0];
29+  var range = Filter.flatten(values[0]);
30   var criteriaEvaluation = CriteriaFunctionFactory.createCriteriaFunction(values[1]);
31 
32   var result = 0;
33diff --git a/tests/Formulas/StatisticalTest.ts b/tests/Formulas/StatisticalTest.ts
34index 32635bb..b8a29c4 100644
35--- a/tests/Formulas/StatisticalTest.ts
36+++ b/tests/Formulas/StatisticalTest.ts
37@@ -99,6 +99,7 @@ test("AVERAGEA", function(){
38 
39 
40 test("AVERAGEIF", function(){
41+  assertEquals(AVERAGEIF([1, 5, [5, 20, 100], [], [[2]], 10], '>2'), 28);
42   assertEquals(AVERAGEIF([1, 5, 10], '>2'), 7.5);
43   assertEquals(AVERAGEIF([1, 5, 10], ">4"), 7.5);
44   assertEquals(AVERAGEIF([1, 2, 2, 2, 2, 2, 2, 2], ">1"), 2);