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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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