feat: add missing stats/base exports to namespace

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---

Author: Planeshifter

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

@@ -81,6 +81,51 @@ setReadOnly( ns, 'cuminabs', require( '@stdlib/stats/base/cuminabs' ) );
 */
 setReadOnly( ns, 'dists', require( '@stdlib/stats/base/dists' ) );
 
+/**
+* @name dmeanstdev
+* @memberof ns
+* @readonly
+* @type {Function}
+* @see {@link module:@stdlib/stats/base/dmeanstdev}
+*/
+setReadOnly( ns, 'dmeanstdev', require( '@stdlib/stats/base/dmeanstdev' ) );
+
+/**
+* @name dmeanstdevpn
+* @memberof ns
+* @readonly
+* @type {Function}
+* @see {@link module:@stdlib/stats/base/dmeanstdevpn}
+*/
+setReadOnly( ns, 'dmeanstdevpn', require( '@stdlib/stats/base/dmeanstdevpn' ) );
+
+/**
+* @name dmeanvar
+* @memberof ns
+* @readonly
+* @type {Function}
+* @see {@link module:@stdlib/stats/base/dmeanvar}
+*/
+setReadOnly( ns, 'dmeanvar', require( '@stdlib/stats/base/dmeanvar' ) );
+
+/**
+* @name dnanvariancepn
+* @memberof ns
+* @readonly
+* @type {Function}
+* @see {@link module:@stdlib/stats/base/dnanvariancepn}
+*/
+setReadOnly( ns, 'dnanvariancepn', require( '@stdlib/stats/base/dnanvariancepn' ) );
+
+/**
+* @name dnanvarianceyc
+* @memberof ns
+* @readonly
+* @type {Function}
+* @see {@link module:@stdlib/stats/base/dnanvarianceyc}
+*/
+setReadOnly( ns, 'dnanvarianceyc', require( '@stdlib/stats/base/dnanvarianceyc' ) );
+
 /**
 * @name ndarray
 * @memberof ns