$scope.checkBox = function (index)
{
    alert(index);
}

<table>
    <tr ng-repeat="n in completeList| filter:search">
        <td ng-click="detailView($index,'detailFlag')">
            <div><img width="100px" height="50px"  ng-src="{{n.gender_image}}" > </div>
        <div>{{n.name}}</div>
        <div>{{n.email}}</div>
        <div>{{n.phone}}</div>
        </td>
        <td>
            <input type="checkbox" ng-model='Selected' ng-click="checkBox($index)" >
        </td>
    </tr>
</table>

<input type="checkbox" ng-model='Selected' ng-click="checkBox($index)" >

<table>
    <tr ng-repeat="n in completeList| filter:search">
        <td ng-click="detailView($index,'detailFlag')">
            <div><img width="100px" height="50px"  ng-src="{{n.gender_image}}" > </div>
        <div>{{n.name}}</div>
        <div>{{n.email}}</div>
        <div>{{n.phone}}</div>
        </td>
        <td>
            <input type="checkbox" ng-model='n.selected' ng-click="checkBox(n)" >
        </td>
    </tr>
</table>

$scope.checkBox = function (item)
{
    if (item.selected === true) {
        // item selected
    } else {
        // item not selected
    }
}

<table>
    <tr ng-repeat="n in completeList| filter:search">
      <td ng-click="detailView($index,'detailFlag')">

        <div><img width="100px" height="50px"  ng-src="{{n.gender_image}}" > </div>
         <div>{{n.name}}</div>
         <div>{{n.email}}</div>
         <div>{{n.phone}}</div>
      </td>
      <td><input type="checkbox" ng-model="n.selected"></td>
    </tr>
</table>

<button ng-click="deleteItems()">Delete</button>

// controller code
$scope.deleteItems = function() {
  $scope.completeList = $scope.completeList.filter(
    function(item) {
      return !item.selected
    }
  );
}