fix: use correct dtype policy

Signed-off-by: Athan <[email protected]>

Author: kgryte

lib/node_modules/@stdlib/stats/nanmean/lib/main.js

@@ -30,9 +30,9 @@ var factory = require( '@stdlib/ndarray/base/unary-reduce-strided1d-dispatch-fac
 // VARIABLES //
 
 var idtypes = dtypes( 'real_and_generic' );
-var odtypes = dtypes( 'real_and_generic' );
+var odtypes = dtypes( 'real_floating_point_and_generic' );
 var policies = {
-	'output': 'same',
+	'output': 'real_floating_point_and_generic',
 	'casting': 'none'
 };
 var table = {