combinedDegreesOfFreedom

Functions
template<domain D>
D float32	combinedDegreesOfFreedom (D int32 data1, D bool ia1, D int32 data2, D bool ia2)
template<domain D>
D float64	combinedDegreesOfFreedom (D int64 data1, D bool ia1, D int64 data2, D bool ia2)
template<domain D>
D float32	combinedDegreesOfFreedom (D float32 data1, D bool ia1, D float32 data2, D bool ia2)
template<domain D>
D float64	combinedDegreesOfFreedom (D float64 data1, D bool ia1, D float64 data2, D bool ia2)

Detailed Description

Approximate the degrees of freedom of a linear combination of independent sample variances.

Note

Uses the Welch-Satterthwaite equation. It's useful for calculating the degrees of freedom when performing a t-test on samples with unequal variances (Welch's t-test).

D - any protection domain

Supported types - int32 / int64 / float32 / float64

Parameters

data1	- first sample
ia1	- vector indicating which elements of the first sample are available
data2	- second sample
ia2	- vector indicating which elements of the second sample are available

Returns

returns the approximated number of degrees of freedom

Leakage

Leaks the number of true values in ia1 and ia2

Function Documentation

combinedDegreesOfFreedom() [1/4]

template<domain D>

D float32 combinedDegreesOfFreedom	(	D float32	data1,
		D bool	ia1,
		D float32	data2,
		D bool	ia2
	)

combinedDegreesOfFreedom() [2/4]

template<domain D>

D float64 combinedDegreesOfFreedom	(	D float64	data1,
		D bool	ia1,
		D float64	data2,
		D bool	ia2
	)

combinedDegreesOfFreedom() [3/4]

template<domain D>

D float32 combinedDegreesOfFreedom	(	D int32	data1,
		D bool	ia1,
		D int32	data2,
		D bool	ia2
	)

combinedDegreesOfFreedom() [4/4]

template<domain D>

D float64 combinedDegreesOfFreedom	(	D int64	data1,
		D bool	ia1,
		D int64	data2,
		D bool	ia2
	)