Table 10.6 Item most-unexpected response list |
This shows the most unexpected responses sorted by unexpectedness (standardized residual). Large standardized residuals contribute to large outfit mean-square fit statistics. UCOUNT= sets the maximum number of "most unexpected responses" to report in Table 10.6.
MOST UNEXPECTED RESPONSES
+------------------------------------------------------------------------------------------------------+
| DATA |OBSERVED|EXPECTED|RESIDUAL|ST. RES.|MEASDIFF| ACT | KID | ACT | KID |
|------+--------+--------+--------+--------+--------+-------+--------+--------------+------------------|
| 0 | 0 | 1.93 | -1.93 | -7.66 | 3.53 | 18 | 73 | GO ON PICNIC | SANDBERG, RYNE |
| 2 | 2 | .07 | 1.93 | 7.57 | -3.50 | 23 | 72 | WATCH A RAT | JACKSON, SOLOMON |
| 2 | 2 | .07 | 1.93 | 7.57 | -3.50 | 23 | 29 | WATCH A RAT | LANDMAN, ALAN |
| 0 | 0 | 1.93 | -1.93 | -7.41 | 3.46 | 19 | 71 | GO TO ZOO | STOLLER, DAVE |
DATA is the response code in the data file
OBSERVED is the code's value after rescoring
EXPECTED is the predicted observation based on the person and item estimated measures
RESIDUAL is (OBSERVED - EXPECTED), the difference between the observed and expected values
ST. RES. is the standardized residual, the unexpectedness of the residual expressed as a unit normal deviate
MEASDIFF is the difference between the ability and difficulty estimates. This produces the EXPECTED value.
ACT is the item entry number
KID is the person entry number
ACT is the item label
KID is the person label
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