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A Process In Developing A Quality Model For Educational Web Application

Table 4: Summary statistics for item

Before data was cleaned (n=61) After data was cleaned (n=49)
Cronbach Alpha(α) 0.96 0.97
Item
Reliability Index 0.88 (Good) 0.87 (Good)
Separation Index 2.66 (Fair) 2.54 (Fair)
Mean 0.00 0.00
Standard Deviation (SD) 0.60 0.71
Infit MNSQ 0.98 (Very Good) 0.98 (Very Good)
Infit ZSTD -.1 -.1
Max 1.26 1.73
Min -1.13 -1.36
Model error 0.20 (Very Good) 0.25 (Very Good)
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