freq | R Documentation |

`freq`

is a list of named numeric variables
containing 11 key frequencies (and their values):

freq

An object of class `list`

of length 11.

the population size

`N`

the number of cases for which

`cond_true`

the number of cases for which

`cond_false`

the number of cases for which

`dec_pos`

the number of cases for which

`dec_neg`

the number of cases for which

`dec_cor`

the number of cases for which

`dec_err`

the number of true positives, or hits

`hi`

the number of false negatives, or misses

`mi`

the number of false positives, or false alarms

`fa`

the number of true negatives, or correct rejections

`cr`

These frequencies are computed from basic parameters
(contained in `num`

) and computed by using
`comp_freq`

.

The list `freq`

is the frequency counterpart
to the list containing probability information `prob`

.

Natural frequencies are always expressed in
relation to the current population of
size `N`

.

Key relationships between frequencies and probabilities
(see documentation of `comp_freq`

or `comp_prob`

for details):

Three perspectives on a population:

by condition / by decision / by accuracy.

Defining probabilities in terms of frequencies:

Probabilities can be computed as ratios between frequencies, but beware of rounding issues.

Functions translating between representational formats:
`comp_prob_prob`

, `comp_prob_freq`

,
`comp_freq_prob`

, `comp_freq_freq`

(see documentation of `comp_prob_prob`

for details).

Visualizations of current frequency information
are provided by `plot_prism`

and
`plot_icons`

.

`comp_freq`

computes current frequency information;
`num`

contains basic numeric variables;
`init_num`

initializes basic numeric variables;
`prob`

contains current probability information;
`num`

contains basic numeric parameters;
`init_num`

initializes basic numeric parameters;
`txt`

contains current text information;
`init_txt`

initializes text information;
`pal`

contains current color information;
`init_pal`

initializes color information.

Other lists containing current scenario information:
`accu`

,
`num`

,
`pal_bwp`

,
`pal_bw`

,
`pal_kn`

,
`pal_mbw`

,
`pal_mod`

,
`pal_org`

,
`pal_rgb`

,
`pal_unikn`

,
`pal_vir`

,
`pal`

,
`prob`

,
`txt_TF`

,
`txt_org`

,
`txt`

freq <- comp_freq() # initialize freq to default parameters freq # show current values length(freq) # 11 known frequencies names(freq) # show names of known frequencies

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