External module "stats/ztest2/docs/types/index.d"

Export assignment ztest2

• ztest2(x: NumericArray, y: NumericArray, sigmax: number, sigmay: number, options?: Options): Results

• Computes a two-sample z-test.

  throws

  sigmax argument must be a positive number

  throws

  sigmay argument must be a positive number

  throws

  must provide valid options

  Parameters

  • x: NumericArray

    first data array

  • y: NumericArray

    second data array

  • sigmax: number

    known standard deviation of first group

  • sigmay: number

    known standard deviation of second group

  • Optional options: Options

    function options

  Returns Results

  test result object

  Example

  var x = [ 2.66, 1.5, 3.25, 0.993, 2.31, 2.41, 1.76, 2.57, 2.62, 1.23 ]; // Drawn from N(2,1)
  var y = [ 4.88, 2.93, 2.96, 4.5, -0.0603, 4.62, 3.35, 2.98 ]; // Drawn from N(3,2)
  
  var out = ztest2( x, y, 1.0, 2.0 );
  // returns {...}
  
  var table = out.print();