testing: now what a basic introduction to testing
TRANSCRIPT
Testing: Now what
A basic introduction to testing
Today’s events
1. Basic tips and tricks (Getting the data ready)2. Hands-on: Reliability 13. Hands-on: Looking at test item performance4. Hands-on: Reliability and more5. Alternatives to classical test theory (IRT)
We won’t cover
• Research functions (t-tests, ANOVA)• Validity designs (much)• Mastery or achievement tests (specifically)
Some big words
• Discrete point• Polytomous• Norm/Criterion-referenced tests• Unidimensional• Reliability • Validity
Other words we (might) use . . .
• mean• variance• standard deviation
Today’s tests focus on
• Reliability• Norm-referenced• Discrete point• Unidimensionality
Getting data
Alternatives?
These change quickly!
Caution
• Use as many items as you NEED• Don’t be constrained by the size of your
answer sheet
Cleaning test data
• Remove R1C1 formatting• Show hidden columns/rows• Remove empty or unnecessary row/columns• Decide what to do with empty cells
Go to “Cleaning Test Data” file on Excel!
To share data, you can make . . .
• a frequency table for scores• a histogram• a scalogram (you’ll see!)
Go to “Frequency and Histogram practice” file on Excel!
Now you can . . .
• Clean your data for analysis• Manipulate your data• Make simple charts for sharing