diff --git a/src/index.js b/src/index.js
index d54b3622..3abcbe5d 100644
--- a/src/index.js
+++ b/src/index.js
@@ -1,12 +1,52 @@
 
-exports.min = function min (array) {
-  return 0;
+exports.min = function min (arr) {
+  	
+  	if (arr == undefined || arr == 0) {
+ 		return 0;
+ 	}
+
+	let arr_min = arr[0];
+   		 
+    for (i = 1; i <=arr.length; i++) {
+        if (arr[i] <= arr_min) {
+            arr_min = arr[i]; 
+        }
+    }
+ 			
+  		return arr_min;
 }
 
-exports.max = function max (array) {
-  return 0;
+exports.max = function max (arr) {
+  	if (arr==undefined || arr==0) {
+ 		return 0;
+ 	}
+
+  	let arr_max = arr[0];
+
+    for (i = 1; i < arr.length; i++) {
+        if (arr_max <= arr[i]) {
+            arr_max = arr[i];   
+        }
+    }
+ 			
+  		return arr_max;
 }
 
-exports.avg = function avg (array) {
-  return 0;
+exports.avg = function avg (arr) {
+		
+	if (arr==undefined || arr==0) {
+ 		return 0;
+ 	}
+
+	let arr_avg = 0;
+	let arr_num = 0;
+	let count = 0;
+
+    for (i = 0; i < arr.length; i++) {
+        arr_num += arr[i];
+        count++;
+    }
+
+ 	arr_avg = arr_num/count;
+  	return arr_avg;
 }