
Type: Subtask

Status: Closed

Priority: Major

Resolution: Fixed

Affects Version/s: None

Fix Version/s: ODF 1.2 Part 2 CD 2

Component/s: OpenFormula

Labels:None

Proposal:

Resolution:
== 6.17.80 TTEST ==
A lot of problems
(1) All formulas miss the degrees of freedom. It is necessary for TDIST.
In case unequal variance there must be defined, whether the degrees of
freedom are made integer by FLOOR or whether they remain real.
(2) In case paired: sqrt
is wrong because it is already contained
in s_
.
(3) In case equal variance: definition of sÂ² is missing.
(4) In case unequal variance: definition does not meet usual
definitions. In fact it is the definition for the equal variance case,
with pooled variance.
(5) As TDIST actually returns the values of the cumulative distribution
function, the definite integral in the formulas has to be revised
together with TDIST.