Variability in the Estimation of Item Option Characteristic Curves for the Multiple-Category Scoring Model
Variability in the Estimation of Item Option Characteristic Curves for the Multiple-Category Scoring Model
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However, for item 4, the mean difference for the normal distribution was significantly higher than that for the skewed distribution.
Figures 14 through 17 present the OCCs for two of the incorrect options of item 4, estimated with the "easy" item set and normal versus negatively skewed ability distributions. For option A, the difference in OCCs for the normal samples occurs chiefly for abilities below -2.00 for two samples which have a discrepantly high probability at this level (Figure 15) . O...ption B presents a different picture, with both the normal and negatively skewed samples showing large differences at the lower ability range (Figures 16 and 17) . However, the normal samples appear to result in OCCs which differ more throughout the range of ability in comparison to the negatively skewed samples.
The ambiguity of the results in relation to the ability distribution may occur because the selection of the samples was based upon the distribution of raw score in the total set of 50 mathematics items.
What to read after Variability in the Estimation of Item Option Characteristic Curves for the Multiple-Category Scoring Model?
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To quickly assess the difficulty of the text, read a short excerpt:
However, for item 4, the mean difference for the normal distribution was significantly higher than that for the skewed distribution.
Figures 14 through 17 present the OCCs for two of the incorrect options of item 4, estimated with the "easy" item set and normal versus negatively skewed ability distributions. For option A, the difference in OCCs for the normal samples occurs chiefly for abilities below -2.00 for two samples which have a discrepantly high probability at this level (Figure 15) . O...ption B presents a different picture, with both the normal and negatively skewed samples showing large differences at the lower ability range (Figures 16 and 17) . However, the normal samples appear to result in OCCs which differ more throughout the range of ability in comparison to the negatively skewed samples.
The ambiguity of the results in relation to the ability distribution may occur because the selection of the samples was based upon the distribution of raw score in the total set of 50 mathematics items.
What to read after Variability in the Estimation of Item Option Characteristic Curves for the Multiple-Category Scoring Model?
You can find similar books in the "Read Also" column, or choose other free books by Buhr, Dianne C. to read onlineMoreLess
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