Usage

`javascript
var ztest = require( '@stdlib/stats-strided-ztest' );
`

#### ztest( N, alternative, alpha, mu, sigma, x, strideX, out )

Computes a one-sample Z-test for a strided array.

`javascript
var Results = require( '@stdlib/stats-base-ztest-one-sample-results-float64' );

var x = [ 4.0, 4.0, 6.0, 6.0, 5.0 ];

var results = new Results();
var out = ztest( x.length, 'two-sided', 0.05, 0.0, 1.0, x, 1, results );
// returns {...}

var bool = ( out === results );
// returns true
`

The function has the following parameters:

- N: number of indexed elements.
- alternative: [alternative hypothesis][@stdlib/stats/base/ztest/alternatives].
- alpha: significance level.
- mu: mean value under the null hypothesis.
- sigma: known standard deviation.
- x: input array.
- strideX: stride length for x.
- out: output [results object][@stdlib/stats/base/ztest/one-sample/results/float64].

The N and stride parameters determine which elements in the strided array are accessed at runtime. For example, to perform a one-sample Z-test over every other element in x,

`javascript
var Results = require( '@stdlib/stats-base-ztest-one-sample-results-float64' );

var x = [ 4.0, 0.0, 4.0, 0.0, 6.0, 0.0, 6.0, 0.0, 5.0, 0.0 ];

var results = new Results();
var out = ztest( 5, 'two-sided', 0.05, 0.0, 1.0, x, 2, results );
// returns {...}

var bool = ( out === results );
// returns true
`

Note that indexing is relative to the first index. To introduce an offset, use [typed array][mdn-typed-array] views.

`javascript
var Results = require( '@stdlib/stats-base-ztest-one-sample-results-float64' );
var Float64Array = require( '@stdlib/array-float64' );

var x0 = new Float64Array( [ 0.0, 4.0, 4.0, 6.0, 6.0, 5.0 ] );
var x1 = new Float64Array( x0.buffer, x0.BYTES_PER_ELEMENT*1 ); // start at 2nd element

var results = new Results();
var out = ztest( x1.length, 'two-sided', 0.05, 0.0, 1.0, x1, 1, results );
// returns {...}

var bool = ( out === results );
// returns true
`

#### ztest.ndarray( N, alternative, alpha, mu, sigma, x, strideX, offsetX, out )

Computes a one-sample Z-test for a strided array using alternative indexing semantics.

`javascript
var Results = require( '@stdlib/stats-base-ztest-one-sample-results-float64' );

var x = [ 4.0, 4.0, 6.0, 6.0, 5.0 ];

var results = new Results();
var out = ztest.ndarray( x.length, 'two-sided', 0.05, 0.0, 1.0, x, 1, 0, results );
// returns {...}

var bool = ( out === results );
// returns true
`

The function has the following additional parameters:

- offsetX: starting index for x.

While [typed array][mdn-typed-array] views mandate a view offset based on the underlying buffer, the offset parameter supports indexing semantics based on a starting index. For example, to perform a one-sample Z-test over every other element in x starting from the second element

`javascript
var Results = require( '@stdlib/stats-base-ztest-one-sample-results-float64' );

var x = [ 0.0, 4.0, 0.0, 4.0, 0.0, 6.0, 0.0, 6.0, 0.0, 5.0 ];

var results = new Results();
var out = ztest.ndarray( 5, 'two-sided', 0.05, 0.0, 1.0, x, 2, 1, results );
// returns {...}

var bool = ( out === results );
// returns true
`