﻿ Table 45 Person measures after each item

# Table 45 Person measures after each item

Table 45 shows the measures and fit statistics for the persons after the administration of each item, starting with the first item. This is useful for tracking how the person measures change as the items are administered. The item difficulties are based on all the items and persons. If items are deleted or selected in the "Specification" menu box , then the person measures are estimated only on the active items. The final measures in Table/Plot 45 will differ from the reported measures in Table 18.

CUMULATIVE KID MEASURES AFTER EACH ACT

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| KID    | 1 -1.49  Watch birds                     | 2 -1.49 Read books on animals            | KID                     |

| NUMBER | SCORE COUNT OBS MEASURE M.S.E. IMSQ OMSQ | SCORE COUNT OBS MEASURE M.S.E. IMSQ OMSQ | LABEL                   |

|--------+------------------------------------------+------------------------------------------+-------------------------|

|      1 |     1     1   1   -1.47   4.50  .00  .00 |     3     2   2    2.17   1.41 1.00 1.00 | M Rossner, Marc Daniel  |

|      2 |     2     1   2    3.01   2.18  .00  .00 |     4     2   2    3.90   1.98  .00  .00 | M Rossner, Lawrence F.  |

|      3 |     2     1   2    3.01   2.18  .00  .00 |     4     2   2    3.90   1.98  .00  .00 | M Rossner, Toby G.      |

|      4 |     1     1   1   -1.47   4.50  .00  .00 |     1     2   0   -5.14   1.41 1.00 1.00 | M Rossner, Michael T.   |

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The displayed fields are controlled by T45OPTIONS= and the Table 45 dialog box.

 Field Meaning Table 45 Table 45 Plot KID NUMBER Person entry number in data file First column in first column of Excel Worksheet 1 Item entry number in data file Top row x-axis of plot and second row of worksheet -1.49 Item difficulty Top row Watch birds Item label (name) Top row SCORE total score by person so far T45OPTIONS=1?????? y-axis choice COUNT total count of valid observations so far T45OPTIONS=?1????? y-axis choice OBS scored observation. Missing is usually blank or "." T45OPTIONS=??1???? y-axis choice MEASURE estimated person measure so far T45OPTIONS=???1??? y-axis choice M.S.E. R.S.E. "Model" standard error of the measure assuming data fit the Rasch model. "Real" standard error of the measure assuming data misfit the Rasch model when REALSE=Yes T45OPTIONS=????1?? y-axis choice IMSQ Infit mean-square fit statistic T45OPTIONS=?????1? y-axis choice OMSQ Outfit mean-square fit statistic T45OPTIONS=??????1 y-axis choice KID LABEL Person label (name) "Person Label field" column selection in dialog box. "Person Legend field" column selection in dialog box. Last column of worksheet. In dialog box: Start at first observation Are values reported in cells with missing (not administered) observations? values for items before the first valid observation are displayed as missing "." or not plotted Skip missing observations values for items after the first valid observation and before the last valid observation are displayed as missing "." or not plotted End at last observation values for items after the last valid observation are displayed as missing "." or not plotted Omit extreme items Extreme, unanchored items are omitted from the plot. They do not change the measures, S.E.s or Mean-Squares. (Sort order) Sequence of persons displayed. Person entry order Person Legends are ordered by last displayed value which is in "Sort" column of worksheet

Table 45 Plot of "Masterchef" Measures, 2017. Horizontal lines for lower persons are bridging missing data.

Help for Winsteps Rasch Measurement Software: www.winsteps.com. Author: John Michael Linacre