ME405: Wet-Dry Bulb Hygrometers: Measuring Relative Humidity and Apparent Temperature

Technical Quality Information

Contributed by: Council of Chief State School Officers (CCSSO) These data were prepared by American College Testing (ACT) based on a field test of the SCASS Performance Event. Unit Name: Wet-Dry Bulb Hygrometers: Measuring Relative Humidity and Apparent Temperature Unit Content: Earth Science Unit Theme: Systems and Interactions Notes: None ME405 - Item 1 Cognitive: Extending Scientific Information SCASS Scale Value: 0.13 Item Analysis: Label N Mean Standard Deviation Item #1 Score 240 3.1625000 1.1141210 Score Frequency Percent Cumulative Frequency Cumulative Percent 1 30 12.5 30 12.5 2 42 17.5 72 30.0 3 27 11.3 99 41.3 4 141 58.8 240 100.0 Frequency Missing = 102 ME405 - Item 2 Cognitive: Using Scientific Information SCASS Scale Value: 2.67 Item Analysis: Label N Mean Standard Deviation Item #2 Score 229 1.5152838 0.6184180 Score Frequency Percent Cumulative Frequency Cumulative Percent 1 124 54.1 124 54.1 2 94 41.0 218 95.2 3 9 3.9 227 99.1 4 2 0.9 229 100.0 Frequency Missing = 113

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