#include <Anova1.hh>
Collaboration diagram for RazorBack::Anova1_:
Public Types | |
| enum | Sumidx_ { TOTAL = 0, BETWEEN = 1, WITHIN = 2 } |
| Indexes the various ANOVA sums. More... | |
Public Methods | |
| Anova1_ () | |
| Ctor: init to empty. | |
| void | clear () |
| Clears the calling object and prepares it for a new analysis. | |
| template<class Initer_> void | add_group (const string &Groupname, Initer_ First, Initer_ Last) |
| Adds a group. More... | |
| const vector<Group_>& | groups () const |
| Returns the vector of all groups (ie. all data points). | |
| double | sum_squares (Sumidx_ Idx) const |
| Returns the sum of squares (Idx can be TOTAL, BETWEEN, WITHIN). | |
| unsigned int | degrees_freedom (Sumidx_ Idx) const |
| Returns the degrees of freedom. | |
| double | mean_squares (Sumidx_ Idx) const |
| Returns the mean of squares. | |
| double | f_ratio () const |
| Returns the F-ratio (ratio of between/within mean squares). | |
| vector<Anova1_::Group_>::const_iterator | find_group (const string &Name) const |
| double | omnibus_ftest () const |
| Returns the significance level for the test that the between/within F ratio is larger than 1.0 (see f_ratio()). More... | |
| double | scheffe_test (vector< Group_ >::const_iterator G1, vector< Group_ >::const_iterator G2) const |
| Returns the significance value that the two groups pointed to by G1, G2 have different means using the Scheffe test. More... | |
| double | scheffe_test (vector< Group_ >::const_iterator F1, vector< Group_ >::const_iterator L1, vector< Group_ >::const_iterator F2, vector< Group_ >::const_iterator L2) const |
| Returns the significance value for the test that the two meta-groups of groups between [F1, L1) and [F2, L2) have different means according to the Scheffe procedure. More... | |
| double | scheffe_test (const vector< vector< Group_ >::const_iterator > &Metagroup1, const vector< vector< Group_ >::const_iterator > &Metagroup2) const |
| Returns the significance value for the test that the two meta-groups of groups defined in the vectors of vector<Group_> iterators have different means according to the Scheffe procedure. More... | |
| double | tukey_atest (vector< Group_ >::const_iterator G1, vector< Group_ >::const_iterator G2) const |
| Returns the significance value that the two pointed to by G1, G2 have different means using the Tukey A test. More... | |
Protected Methods | |
| void | update_sumsq (double Sx, double Sx2, unsigned int n) |
| double | f_test (double Fratio) const |
| double | q_test (double q) const |
Private Attributes | |
| vector<Group_> | Xgroups |
| vector<double> | Sumsq |
| vector<double> | Meansq |
| unsigned int | Groupno |
| unsigned int | Groupsize |
| unsigned int | Ntotal |
| vector<unsigned int> | Degfree |
| bool | Equalgroups |
| double | Sumx |
| double | Sumx2 |
| double | Sumgroup |
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Indexes the various ANOVA sums.
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Ctor: init to empty.
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Clears the calling object and prepares it for a new analysis.
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Adds a group. The measurement data for the group are in the range [First, Last) (can come from any STL sequence). The name of the group is Groupname. Throws Toofewexc_ if [First, Last) does not specify a valid range with at least 1 data point. |
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Returns the vector of all groups (ie. all data points).
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Returns the sum of squares (Idx can be TOTAL, BETWEEN, WITHIN).
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Returns the degrees of freedom.
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Returns the mean of squares.
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Returns the F-ratio (ratio of between/within mean squares).
Definition at line 158 of file Anova1.hh. Referenced by omnibus_ftest(). |
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Returns the significance level for the test that the between/within F ratio is larger than 1.0 (see f_ratio()). If the value returned by f_test() is low, then the probability is large that f_ratio() is high, ie. that some of the group means are significantly different from some of the others ("omnibus F-test"). |
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Returns the significance value that the two groups pointed to by G1, G2 have different means using the Scheffe test. A small returned value means that the means are significantly different. |
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Returns the significance value for the test that the two meta-groups of groups between [F1, L1) and [F2, L2) have different means according to the Scheffe procedure. [F1,L1) and [F2,L2) are supposed to be valid ranges in the groups given to the Anova1_ object before. Currently, only continuous ranges are supported (not any combination of groups). A small returned value means that the means are significantly different. |
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Returns the significance value for the test that the two meta-groups of groups defined in the vectors of vector<Group_> iterators have different means according to the Scheffe procedure. The iterators in Metagroup1,2 are supposed to be valid ranges in the groups given to the Anova1_ object before. A small returned value means that the means are significantly different. |
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Returns the significance value that the two pointed to by G1, G2 have different means using the Tukey A test. A small returned value means that the means are significantly different. |
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Referenced by add_group(). |
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Referenced by omnibus_ftest(). |
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1.2.6 written by Dimitri van Heesch,
© 1997-2001