docs: update example

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

Author: kgryte

lib/node_modules/@stdlib/stats/incr/nanstdev/examples/index.js

@@ -18,26 +18,19 @@
 
 'use strict';
 
-var randu = require( '@stdlib/random/base/randu' );
+var uniform = require( '@stdlib/random/base/uniform' );
+var bernoulli = require( '@stdlib/random/base/bernoulli' );
 var incrnanstdev = require( './../lib' );
 
-var accumulator;
-var s;
-var v;
-var i;
-
 // Initialize an accumulator:
-accumulator = incrnanstdev();
+var accumulator = incrnanstdev();
 
 // For each simulated datum, update the corrected sample standard deviation...
 console.log( '\nValue\tSigma\n' );
+var v;
+var i;
 for ( i = 0; i < 100; i++ ) {
-	if ( randu() < 0.2 ) {
-		v = NaN;
-	} else {
-		v = randu() * 100.0;
-	}
-	s = accumulator( v );
-	console.log( '%d\t%d', v.toFixed( 4 ), s.toFixed( 4 ) );
+	v = ( bernoulli( 0.8 ) < 1 ) ? NaN : uniform( 0.0, 100.0 );
+	console.log( '%d\t%d', v.toFixed( 4 ), accumulator( v ).toFixed( 4 ) );
 }
 console.log( '\nFinal standard deviation: %d\n', accumulator() );