fix: update nanvariancech example

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---

Author: gururaj1512

lib/node_modules/@stdlib/stats/base/nanvariancech/lib/accessors.js

@@ -53,8 +53,8 @@
 * // returns 6.25
 */
 function nanvariancech( N, correction, x, strideX, offsetX ) {
-	var xget;
 	var xbuf;
+	var get;
 	var mu;
 	var ix;
 	var M2;
@@ -69,10 +69,10 @@ function nanvariancech( N, correction, x, strideX, offsetX ) {
 	xbuf = x.data;
 
 	// Cache references to element accessors:
-	xget = x.accessors[ 0 ];
+	get = x.accessors[ 0 ];
 
 	if ( N === 1 || strideX === 0 ) {
-		v = xget( xbuf, offsetX );
+		v = get( xbuf, offsetX );
 		if ( v === v && N-correction > 0.0 ) {
 			return 0.0;
 		}
@@ -82,7 +82,7 @@ function nanvariancech( N, correction, x, strideX, offsetX ) {
 
 	// Find an estimate for the mean...
 	for ( i = 0; i < N; i++ ) {
-		v = xget( xbuf, ix );
+		v = get( xbuf, ix );
 		if ( v === v ) {
 			mu = v;
 			break;
@@ -100,7 +100,7 @@ function nanvariancech( N, correction, x, strideX, offsetX ) {
 	M = 0.0;
 	n = 1;
 	for ( i; i < N; i++ ) {
-		v = xget( xbuf, ix );
+		v = get( xbuf, ix );
 		if ( v === v ) {
 			d = v - mu;
 			M2 += d * d;

lib/node_modules/@stdlib/stats/base/nanvariancech/lib/index.js

@@ -28,7 +28,7 @@
 *
 * var x = [ 1.0, -2.0, NaN, 2.0 ];
 *
-* var v = nanvariancech( 4, 1, x, 1 );
+* var v = nanvariancech( x.length, 1, x, 1 );
 * // returns ~4.3333
 *
 * @example

lib/node_modules/@stdlib/stats/base/nanvariancech/lib/main.js

@@ -49,7 +49,7 @@ var ndarray = require( './ndarray.js' );
 * @example
 * var x = [ 1.0, -2.0, NaN, 2.0 ];
 *
-* var v = nanvariancech( 4, 1, x, 1 );
+* var v = nanvariancech( x.length, 1, x, 1 );
 * // returns ~4.3333
 */
 function nanvariancech( N, correction, x, strideX ) {