Table 6.2 Graphical description of facet statistics

Controlled by Barchart=

One table is produced for each facet. Each entry in the table is a bar-chart reflecting the distribution of the reported statistics. The scale is from left to right, with range such that all facets have the same scale for each statistic. "M" represents the mean value of the statistic for the facet, "S" is one sample standard deviation each side of the mean, "Q" is two sample standard deviations, and "X" is three.

 

Frequencies above 9 are reported vertically. 10 is printed as

1

0

 

Ratings of Scientists (Psychometric Methods p.282 Guilford 1954)

Table 6.2  Junior Scientists Facet Summary.

 

Logit:

                   1   1       1      1             1     1       1

 +-----Q----------------S----------------M----------------S----------------Q-----+

-1                                       0                                       1

 

S.E.:

               61

 +------------QMQ----------------------------------------------------------------+

 0                                                                               1

 

Infit MnSq:

           1             1   1     1          1      1                         1

 +-----------------S--------------------M+------------------S--------------------Q

 0                                       1                                       2

 

Outfit MnSq:

          1              1      1 1               1     1                      1

 +------------------S--------------------M--------------------S------------------+

 0                                       1                                       2

 

Infit ZStd:

        1                    1   1    1       1   1             1

 +---Q-----+---------+S--------+------M--+---------+---S-----+---------Q

-4        -3        -2        -1         0         1         2         3

 

Outfit ZStd:

        1                    1     1 1          1  1            1

 +----Q----+---------+S--------+-------M-+---------+----S----+---------+

-4        -3        -2        -1         0         1         2         3

 

Count:

                                         7

 +---------------------------------------M---------------------------------------+

 14                                     15                                      16

 

Raw:

     1  1      1     1           1    1      1

 +---+--+S-+--+--+--+--+M-+--+--+--+--S--+--+--+---+

 50 54 57 60 63 66 69 72 75 78 81 84 87 90 93 96 100

 

Average:

             1   1        1       1               1      1        1

 +-----------------S-+----------------M--+---------------S---+--------------Q----+

 3                   4                   5                   6                   7

 

Fair:

            1   1         1       1               1      1         1

 +----------------S--+----------------M--+---------------S---+---------------Q---+

 3                   4                   5                   6                   7

 

PtMea:

              1  1       1       1        1                       1  1

 +---------------S--------------------M-------------------S--------------------Q-+

 0                                                                               1

 

Definitions of numeric bar-charts:

Logit:

Logit (or user-scaled) measures of elements

S.E.

Standard errors of the measures  (Barchart=All)

Infit MnSq:

Infit, information-weighted, inlier pattern sensitive, mean-square fit statistics

Outfit MnSq:

Outfit, outlier sensitive, mean-square fit statistics

Infit Zstd:

Standardized, approximately N(0,1), infit statistic

Outfit Zstd:

Standardized, approximately N(0,1), outfit statistic

Count:

Number of observations of the elements (Barchart=All). Total observations for all estimable elements.

Raw:

Raw scores of the elements (Barchart=All)

Average:

Average observations = Raw / Count (Barchart=All)

Fair:

Fair-values of the average observations (Barchart=All)

PtMea:

Point-measure or point-biserial correlations of the elements (Barchart=All, Ptbiserial=)


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