function createStream1( k ) {
		return new RandomStream( k, opts );
	}
Returns a readable stream for generating pseudorandom numbers drawn from a chi distribution.

@private
@param {PositiveNumber} k - degrees of freedom
@throws {TypeError} `k` must be a positive number
@throws {TypeError} options argument must be an object
@throws {TypeError} must provide valid options
@throws {Error} must provide a valid state
@returns {RandomStream} Stream instance